No app store on apple tv
I updated my apple tv (3rd gen) but there's still no app store. Where is it?
Apple TV
There is no App Store on the 3rd generation Apple TV. All possible apps are installed when you update your software. See the following from Download apps on your Apple TV - Apple Support
The App Store isn’t available on Apple TV (3rd generation). To get new apps that you can use on your Apple TV (3rd generation), update your software.