This article is for system administrators.
If a Screen Time passcode is set up on a managed device, you can install a profile to remove the passcode and turn off Screen Time.
Turn off Screen Time
To remove the Screen Time passcode and turn off restrictions, install a profile with the allowEnablingRestrictions restriction set to false. This removes the restrictions passcode and Screen Time usage limits and data.
If you want to allow access to Screen Time again, change the allowEnablingRestrictions restriction to true, or remove the profile.