Can't get into Apple ID

You will NEED to login with the credentials of the AppleID of the owner who setup the phone.

If that wasn’t you, you need to contact who DID own it then.

Otherwise, the phone will remain as it is now; a paperweight.

More details are available here:

https://support.apple.com/en-us/HT201365

If you were the owner, but have also misplaced the credentials to your AppleID, start here:

https://iforgot.apple.com/