I need to know how to download my account on my Android phone, as well as receive a physical card?

You need to use an iPhone to activate the card, to use it, and to request a physical card. Otherwise, you only receive a line of credit with the Apple Store

All the ways to watch Apple TV+

I notice I am already paying a subscription to Apple TV . I signed in some weeks ago but I only have an Android phone. Will this work and how do I get my app?