I was on my way to a moderate score with my sim-sisters when one of them duplicated handiness -- because I forgot that invention also develops handiness. *grumbles at self*
At week 10 day 1, I had:
13 jobs maxed, 14 rewards
13000 x (1+ 14*.05) = 13000 * 1.7 = 22100
I lost a whole bunch of rewards because I changed jobs too quickly.
I have no idea how those high scores happened, can't wait to find out.