To gain access to "Parent Access", lock the child's device from the Family Link app on your own device then you'll see the "Parent Access" button on the lock screen of your child's device.

BTW, the Family Link app is for parents while "Parental Control" is available on supervised devices.

Answer from Yao on Stack Exchange
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JustAnswer
justanswer.com › software › qbk3o-family-link-parent-access-code-not-working-family-link.html
Fix Family Link Parent Access Code Not Working
October 12, 2024 - If the Family Link parent access code shows 'Incorrect Parent Code,' first verify the Google account credentials linked to Family Link. Ensure the device’s date and time settings are correct, as discrepancies can cause authentication errors. Try resetting the parent access code through the Family Link app or Google account recovery options.
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Google Support
support.google.com › families › answer › 7307262
Unlock your child's device - Google For Families Help
To go to this code directly in the app, tap the button below: ... On your device, open Family Link . At the top left, select your childs profile Parent access code.
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Google
families.google › familylink
Family Link from Google - Family Safety & Parental Control Tools
Set up parental controls on Google services like Chrome, Play, YouTube, and Search. Family Link allows you to block inappropriate sites, require approval for new apps, and manage permissions. Family Link gives you access to manage your child's account and data settings.
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App Store
apps.apple.com › us › app › google-family-link › id1150085200
Google Family Link App - App Store
• To see the location of your child or teen’s device, the device must be powered on, recently active, and connected to the internet through data or wifi. • Family Link parental controls are only available for supervised Google accounts. With supervised Google Accounts, children get access to Google products like Search, Chrome, and Gmail, and parents can set up basic digital ground rules to supervise them.
Rating: 4.7 ​ - ​ 262K votes
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Google Support
support.google.com › assistant › thread › 210034885 › how-to-check-parent-access-code
How to check parent access code - Google Assistant Community
April 7, 2023 - Skip to main content · Google Assistant Help · Sign in · Google Help · Help Center · Community · Google Assistant · Terms of Service · Submit feedback · Send feedback on
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HP Support Community
h30434.www3.hp.com › t5 › Notebook-Operating-System-and-Recovery › Parental-access-code › td-p › 9191000
Parental access code - HP Support Community - 9191000
September 27, 2024 - Verify that you have the correct account linked to your child's device. Check for any notifications or alerts in the app regarding access codes or restrictions. If you have access to your Google account, you might be able to reset parental controls directly from the Family Link app.
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JustAnswer
justanswer.com › laptop › nrbng-cannot-due-family-link-access-code-nobody-knows.html
How to Resolve Family Link Access Code Issues - Expert Q&A
December 29, 2023 - To obtain the family access code, follow these steps: Launch the Family Link app on the parent's device.Select the child's account.Tap "Parent access" or "Unlock your child's device."The code will appear on the screen.Input this code on the ...
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Reddit
reddit.com › r/familylink › parental code is not working in my kiddos phone
r/familylink on Reddit: Parental code is not working in my kiddos phone
September 18, 2024 -

So my daughter's phone is locked. I tried to unlock it by entering parental code but it's not working. The thing is, the phone's not connected to the internet so Im thinking it is the reason. But how can I connect it to the internet if it cannot be unlocked! Anyone had the same scenario before? Thanks!

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Google
families.google.com › familylink › privacy › notice
Family Link Disclosure for Parents
Your child can visit their Google Account to find and manage activity information that’s saved in their account or profile and you can also help manage their activity information by signing in to your child’s Google Account, or accessing their profile in Family Link.
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Family Link
familylink.google.com › parent_access › code
Get parent access code - Family Link
Healthy digital habits for your family start with the Google Family Link app. With easy-to-use tools, you can understand how your child is spending time on their devices, share location, and manage privacy settings.
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JustAnswer
justanswer.com › smartphones › cmesl-i-m-trying-unlock-grandson-s-phone-code.html
How to Unlock Your Grandson's Phone with Family Link Parent Access Code
July 11, 2019 - It's a 6-digit unlock code with a parent code. ... Google Family Link is associated with your child's Gmail account. Unfortunately, to remove the app from their device, you will need to delete their Gmail account as well.
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Scribd
scribd.com › document › 716244943 › Unlock-your-child-s-device-Using-Family-Link
Unlock Child's Device with Family Link | PDF | Wellness
JavaScript is disabled in your browser · Please enable JavaScript to proceed · A required part of this site couldn’t load. This may be due to a browser extension, network issues, or browser settings. Please check your connection, disable any ad blockers, or try using a different browser
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HardReset.info
hardreset.info › devices › apps › apps-google-family-link › find-parent-access-code
How to Find Parent Access Code on Google Family Link - HardReset.info
By using this feature, parents ... the list of options by pressing the three dashes in the upper left corner of the screen. The access code can be found in the Parent access code tab....
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Google Support
support.google.com › families › answer › 7101025
Get started with Family Link - Google For Families Help
To edit Daily limit settings, sign in or use your Parent Access Code to verify that you're a parent. Tip: Daily limits apply to each Android device or Chromebook your child uses. For example, if you set a daily limit of 2 hours, your child would get 2 hours of time on each device. Allow or block apps · To go to the child's account settings that you last visited in the Family Link ...
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Google Account
myaccount.google.com › family › details
Family Details - Sign in - Google Accounts
Sign in · Use your Google Account · Not your computer? Use Guest mode to sign in privately. Learn more about using Guest mode · Create account
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Google
families.google › familylink › faq
Frequently Asked Questions and Answers - Google Family Link
First, a child/teen will need a compatible device (see which devices work with Family Link). Then, sign the child/teen into the device. If the child/teen is already supervised by Family Link, the sign-in will help them set up parental controls.
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Android Authority
androidauthority.com › home › mobile › how to set up and use google family link
How to set up and use Google Family Link - Android Authority
March 20, 2025 - Parent Device: Hit Next until the app prompts you to finish setup on the Child Device. Child Device: At this point, the app will ask for several permissions. Just keep hitting Next to allow all of them. Child Device: Name the child device when prompted. Child Device: The app will then ask which apps you want your child to have access to. Deny or accept the ones you want and hit next. That’s it! You are now connected via Google Family Link.
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Google
safety.google › settings › parental-controls
Google's Parental Controls and Family Link - Safety Center
Adjust parental controls on Google services like Chrome, Play, YouTube, and Search. Family Link allows you to block inappropriate sites, set permissions for apps and websites, and more. ... You can manage your child’s access to specific websites when they are using the Chrome browser on their Android or ChromeOS device through parental controls.