It is interesting to observe that the best way to hit a big score is to spend as little Requisition Points as possible
Every single req point left unspent is 50 points extra to the score, it's obvious most of the score will be made up by that alone.
Company Strength
Not sure how this is scored
4500+500*((company strength total)/300)
God knows WHY it is like that, but it's obvious enough it's being calculated this way.
Mission Completion Medals
Maybe tops at 10,000 or so?
Maxes out at 8000.
16 missions, 500 points each for gold, 250 for silver, 125 for bronze
Absolute max score for campaign is:
6000+5000+4500+8000+50*requisition, and for now doesn't seem like you can gain more than ~550 requisition. So pretty much 50000 max score.