i forgot my screen time email and password i need help

If running IOS 13.4 or later.

Screen Time passcode reset

Did you forget your Apple ID email?

See if you can recover the ID/password.

Apple ID - How to find your Apple    An iCloud e-mail address is an Apple ID.

Apple ID - Find              

Enter the Apple (iCloud) ID and click Forgot Password.

Apple ID - Manage            

Apple ID – Forgot Password