My son plays soccer and football
That's awesome, it's also called association football where there are two teams of eleven playing with a ball.
What else can you tell me about it? I just watch games but don't know a lot lol
It's the world's most popular sport with 250 million players playing in 200 countries. 
I had no idea it was that popular!
Funny because someone is just trying to get the ball in the goal and so many people watch it!
Yes and those goalies take a lot of abuse and get injured a lot
They came up with the "Laws of the Game" in 1863, in England. 
What are Laws of the Game? Like rules of the game?
I believe so. I know that the International Federation of Association Football governs it internationally.