Is there a way so that you can version your game. Like if i package it, it becomes version 0.1 and then if i make changes and package it again, it can keep track and change it to version 0.2? Or is there like a property you can set for version number?
You can’t package without doing this. Take a look at the docs 
The project launcher is the way to do it. Then you can have 1.0 and patches after that:
It’s not showing the version number in the folder that i packaged though.I have checked the create release version of game option and added the version number but where can i see this number after packaging?
You need to make your package with the Project Launcher, that way you can define version 1.0 and then also make patches for it later:
If you end up with a game you can still see print strings and open the console, it’s not really packaged.