Hey! Thanks for your comment!
Basically shoot the ball into the blue teams goal. Just like football / soccer but with guns. Your goal is on the left hand side and the opponents goal is on the right hand side. Shoot the ball into their goal to score a point. When they shoot the ball into your goal they get a point.
Let me know if that helps 👍.
Unless you're in the controls menu? Press escape to leave the menu and go to "start game".