Can we publish game and app both on Google Playstore

Answer 1

I don't get it. Google play store do has apps and games, and various developers publish them. What is your actual question? Please clarify it.

Answer 2

If you manage to get a signed apk, either via Sketchware on your mobile device (closed down for 1 year) or Android Studio on a PC or laptop, you have to pay Google $15 or 15€ to be able to publish apps if you haven't already. Then you can publish whatever app you want as long as you don't break any rules.