Parents can access their child's account data, like emails, by signing in to the child's account. If you don't know the password, you can reset their password. Note: You can only reset your child's password if you created their account in Family Link and they're under 13 (or the applicable age in your country).

You're never more than a tap away from your data and settings. Just tap your profile picture and follow the link to “Manage your Google Account”. From your profile picture, you can also easily sign in, sign out, or turn on Incognito mode.