If you’re looking for apple id there are a few places you can check. Here’s a quick rundown of where you find it.
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apple id is the account you use to access Apple services like the App Store, iTunes Store, iCloud, iMessage, FaceTime, and more. It includes the email address and password that you use Sign in, and all the contact, payment, and security details that you’ll use across Apple services. If you’ve forgotten apple id or need help signing in, get support.