How to create a new Apple ID - Apple Support
If you see a message that you need to sign in to iTunes
If you created a new Apple ID on the web and see a message that you need to sign in to iTunes, follow the steps below for your device:
• On an Apple TV: Sign in to the App Store, iTunes Store, or Apple Music with your Apple ID account.
• On a PC: Sign in to iTunes with your Apple ID account.
• On an Android device: Sign in to Apple Music app on Android with your Apple ID account.
A newly created Apple ID account wil need to have:
• a confirmed email address (respond to message)
• complete user details, including DoB, and billing address
• a valid payment method (or select ‘None’ for only getting free apps)
Manage your Apple ID account - Apple
Set up your Apple ID on Apple TV - Apple Support
Apple TV user guide - Apple Support