This looks to be a frequent subject of interest so it might be worth to explain that “it doesn’t work like that” :D.
Android is an operating system, like windows or linux (it is in fact a flavour of linux).
There is no such a thing as “exporting” a game - or the product of any application for that matter - to android.
What might be is what is commonly referred to as “porting”, which is nothing else than re-writing the same application for a different operating system.
In our case, the object of this re-writing will (probably) be the portion of blender that allows blender files to be played as games.
So the initial topic “about blender export to android” really is “about rewriting blender so that it works on android”.
There is an alternative, which is to pick an existing game engine that works on android and write an exporter for the game data defined in a blender file.
This is the same as asking “I want Unreal to read a blender file and play its content as it was a game”.
Even though blender has the worst file format one could think of (a memory dump), writing an importer would likely take less time than re-writing the entire game runtime for android.
There is a catch though, Python: if you write a blender game, sooner or later you end up needing a Python script. Because Python 3.X only runs on a python runtime, you also need to have that entire runtime on android, unless you want to write a dedicated python interpreter, something no one in his sane mind would even do, since Python doesn’t even have a specification to start with.