Where can I get the game for android?

You can download it on the itch.io site. Here's an android install instructions page he made: https://mystman12.itch.io/baldis-basics/devlog/66138/android-versions-released-heres-how-to-install-it

and here's the main page where he also has instructions and the main download links: https://mystman12.itch.io/baldis-basics