Re: How to retrieve Apple ID from a broken iPhone?
Do you have a copy of your passwords etc., saved or stored safely any where ?
An Apple ID is generally an email address. (In just a few countries it can be a phone number.)
Apple ID is now Apple Account. You can still sign in with the same email address or phone number and password.
If the phone was not your only Apple device: The Apple (ID) Account details may be in use in FaceTime, Messages, iCloud, Apple Music etc., and / or there may be eMails from Apple sent to that email addresss.
See if Apple Support's online articles (links below) can help:
If you forgot your Apple Account primary email address or phone number - Apple Support
and
If you’ve forgotten your Apple Account password – Apple Support (AU)
To sign in to your online Apple Account : https://account.apple.com/