Apple now tells you to enter the password for your Apple ID account in a screen labeled Screen Time Passcode Recovery.

Go to Settings > Screen Time. Tap “Change Screen Time Passcode” and then “Forgot Passcode?” Enter your Apple ID and follow the prompts to reset your passcode. Changes Not Taking Effect ...

How to lock apps with Screen Time Screen Time, a feature that’s built into your iPhone, can put limitations on how an app is used. You can use it to lock every app except for the phone app.