Is there a way to change a passcode that you have forgotten the original one.
What can you do if your 4 digit code is forgotten in family sharing.
Mac mini, macOS 10.15
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Your passcode for Screen Time? If not that, what passcode?
See if anything here helps.
If necessary, you will need to restore the device to factory settings. Do not restore from a backup made when the Screen Time code was active.