I can’t find the App Store on my Apple TV box 4K. How to download Disney plus app

The App Store app is pre-installed and protected against accidental deletion, and normally can’t be hidden. Search the home screen, including scrolling down to the bottom and in folders.

It might not appear if your account is for a country or region where Apple doesn’t provide App Store services. Availability of Apple Media Services - Apple Support

Find apps in the Apple TV App Store - Apple Support

Purchase and download apps on Apple TV - Apple Support

Where is Disney+ available? - Disney+ Help Center