I like to see how high a rank I can get without undue effort. I know i'll never top-20, I have no patience or skill for it.. (stupid fighter rank)
I do like to watch my K/D ratios tho, just to gauge my efficacy.
I lately just hang around 100 overall rank, doing what i do.
So, I do play for score, I guess, but unfortunately one of my funnest drinking activities as of late is shooting at cv's with shorebats, and 5" gunning from cv's, both of which dont count for any score. So i guess i don't care about score.