This is my first time in any game jam. If i made a game can i export it in window ? And how other people will be able to play my game online when it is exported to windows?
You can exported in any ways you like (just make sure other people can play it) and then upload it on itch.io (which is here) on the game jam page (which is https://itch.io/jam/brackeys-4). If you exported as a windows executable (.exe) other people will have to download it to play it or if you exported it as for example webGL other will be able to play it in the browser