Any other ways to earn RIP score apart from boxes?

I’ve been playing the game a lot and only need 3 trophy’s for the platinum (level 10 in market mile, total of 1hour on 4X and 11k ripcord) and I’m struggling with the rip score. I’m currently on 6.4k and if I got enough rip chips to get the boxes (not diy boxes as I only seem to get titles from them) I’ll only get to 8.5k maximum. I’ve done all the story/tutorial missions too, any way to get more rip score?