How do i activate apple app on Fire stick

1. Download the Apple TV app from the Fire TV App & Games Store.
2. To personalize the app, and to have it recognize your subscriptions and purchases, sign in with your Apple ID account, through the in-app Settings (sprockets wheel icon).

How to create a new Apple ID - Apple Support

If you set up the Apple TV app on your smart TV, you might be redirected to activate.apple.com to create your Apple ID. You can also create your Apple ID on the web [as described].

An (new) Apple ID must be complete for user information and verified for email account and payment method. New accounts will get a verification email, to which you should respond or copy a code.

After that is completed, sign in again.

how do I activate apple app on fire stick. It keeps saying my used id and password is not verified

I have the same problem. Nothing works. Already updated fire stick as advised.