My phone won't let me change my passcode and the screen time password won't let me change with my Apple ID.. I think my phone has been compromised!

and it's not letting me change by my Apple ID passcode

Or do you mean Apple ID password?

If so read again -> Related Article -> If you forgot your Apple ID password

Then see this Apple article: What to do after you change your Apple ID or password

What to do after you change your Apple ID or password - Apple Support

If you forgotten your passcode, see this Apple article: If you forgot your iPhone passcode

If you forgot your iPhone passcode - Apple Support

If you can’t get your iPhone to show the recovery mode screen and you need help, contact Apple Support.

See also the following Apple articles:

Recognize and avoid phishing messages, phony support calls, and other scams

Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

If you think your Apple ID has been compromised

If you think your Apple ID has been compromised - Apple Support

did you ever find out how to fix it? i have the same issue and apparently nobody at apple can help lol

thanks