Can you use your iCloud to Sign into App Store

Can I use my iCloud Account to sign into App Store

If your iCloud is also your Apple ID, yes you can.

FYI: Your Apple ID is the personal account you use with all Apple products and services. It includes the email address and password you use to sign in, as well as the contact, payment, and security details that you use with Apple.

You can’t merge multiple Apple ID accounts.