i want to find the email used for activation lock

Greetings griffin3124,

Thanks for using the Apple Support Communities!

I understand that after updating your iPhone to iOS 9.3, your current Apple ID and password are not working to activate your device. In some cases, the hint that you see on the Activate iPhone screen may not match your current Apple ID.

We know that this situation can be frustrating, but we’re here to help. To troubleshoot this situation and work towards resolving it, please read over and follow the steps from the following article.

If you can't activate your iPhone, iPad, or iPod touch after installing a software update - Apple Support

Best

If you are seeing the Activation Lock screen after updating your iOS device, you want try the following:

-Restart your iOS device and try to sign in again.

-Visit appleid.apple.com and sign in to ensure your password is correct. If you change anything here, only change your password. Try to sign in again on the iPhone.

-Plug it into iTunes on a computer and put in your Apple ID and Password when it prompts you (like it did on your iOS device).

-Check iCloud.com in Settings. If you see your iOS device listed, remove it from account (don't erase or hit lost mode). Restart your device and try to set it up again.

-These steps should fix most issues. For anyone else, you will have to contact Apple (1-800-MY-APPLE or getsupport.apple.com).

I hope that helps!

There is no way to find that email.

Apple has no way of looking it up either.

Beat advice is to bring it to an Apple Store with an original purchase reciept to have it removed