I forgot my screen password

Are you referring to the Screen Time passcode or the passcode you use to open your iPad?

If it's the 4 or 6 digit passcode to open your iPad, follow the directions in this link --> If you forgot the passcode on your iPad, or your iPad is disabled - Apple Support

If you are referring to your Screen Time Passcode, see this link --> If you forgot your Screen Time passcode - Apple Support