NVDA is a Windows platform only piece of software. There is no Android port available at this time.
Android Accessibility Suite, which includes the TalkBack screen reader, is the de facto standard on the Android platform.
Brian - Windows 10 Pro, 64-Bit, Version 20H2, Build 19042
If you think that you can think about a thing, inextricably attached to something else, without thinking of the thing it is attached to, then you have a legal mind.
~ Thomas Reed Powell