How To reset screen time passcode
Forgot screen time passcode
iPhone 6 Plus, iOS 12
Forgot screen time passcode
iPhone 6 Plus, iOS 12
These are the minimum requirements to reset the ScreenTime passcode:
If you meet ALL above requirements, these are the instructions:--> If you forgot your Screen Time passcode – Apple Support
Shouldn't be this case, you need to erase that device following these instructions (even if related to the passcode to lock/unlock device's screen):--> If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support
The bad news is that you cannot restore data from a backup, since the ScreenTime passcode would come back in.
Regards
Giulio
I'm unable to reset passcode because there no icon forgot passcode
How To reset screen time passcode