Like once you get 3000 points, and you run it, do you lose the points?
Converse with fellow players
You cap out at 3500, each win gives you somewhere above 150 and losing a game cost you that much, but it can vary depends on your team's performance.
It is really hard to lose though. I had a game with blue base under assault, 4 people at blue base at that time and none activated the burst barrier and we still managed to win that game.