In my tennis lessons, sometimes we play this game with these foam balls.

There are two ppl on each side and you aare supposed to be against the person in front of you or diagonal from you (depending on what the teacher says).
Theyre always saying that we need to make at least 2 points, but idk how to count those 2 points.
Is it each time I hit the ball? Each time it lands inside of where its supposed to be? And how can I tell if Im out? If it hits out of the court? if Imiss the ball? if HE misses the ball?

im so confused.
and i dont relaly want to ask the instructor. its kind of embarassing nd when he explained it to the class before, i still didnt get it.