Open case

Hello Rukshar41!

Pardon me if I misunderstood, but you cannot physically remove your Apple ID from your iPhone by removing the case.

Here’s how to delete your Apple ID:

How to delete your Apple ID account - Apple Support

Here’s how to deactivate your Apple ID:

How to deactivate your Apple ID account - Apple Support

Here’s how to change your Apple ID:

Change your Apple ID - Apple Support

If you forgot your Apple ID password - Apple Support then click on the link.

Also, If you forgot your Apple ID email address or phone number - Apple Support you may find this link of assistance.

I hope this is helpful. Good Luck!