I know a few, which area of the game are you thinking of.
I stage it this way:
1) at the end of the training segment: 50,000 plus
2) just before the start of the ambush: 332,000 to 390,000
3) at the beginning of the Scan: 496,000 to 642,000
4) at the end of the game: 999,999 to 1,167,000
based on the above and your experience of how your score progresses which area do you want a tip for?????