I don't know about cash, but score is easily calculated. Every zombie you kill sets a multiplier, shown at the top left. The more zombies you kill in a short time without getting hit, the higher the multiplier will go. Say, you kill 3 zombies in a short time? Multiplier is 4. (I assume you already know this, but never hurts to be sure.)
At the easiest level (one star), each zombie is worth three points. This goes for the normal, the running, and the spitting zombies (Basically the ones with yellow eyes, excepting the boomer.). For every star you go above that, 2 points are added to a single zombie. So, for example, if I run the 4 star level (Southtown Mall), I'll get 9 points, times the multiplier, for each zombie. So say I kill ten zombies before the multiplier before the multiplier runs down. That's equivalent to killing 55 zombies (1+2+3...+10) when you only killed 10. That means you get 45*9=405 more points. SCORE!
The fat zombies get more points. The hulks (the ones with red eyes) double your points for a single zombie (so for the ex. above, they score 18 times the multiplier), while the boomers (the ones with odors) seem to add five points (on a level with 11 point zombies, they score 16).
For money, I don't have a direct formula, but there is almost no correlation between distance traveled/health/accuracy and money. It is true that the farther you travel, the more containers you'll see and the more money you'll get from them. But it turns out this gets beaten out by killing zombies (and thus score) with the new update. Case in point: I kill 100 zombies on Broadway (the 5 star level), while only traveling about 250 yards. This nets me about twice as much money as if I just ran for my life, smashing all the containers along the way, traveling 700+ yards and only killing ~10 zombies. (That run, I got $2000 vs. $1100.)
And Daddy Warbucks actually does do shit. I say this b/c with Daddy Warbucks (5 star), what was once 1600 is now 2000! You'd be surprised how much 400 extra dollars gets you.
So that's my spiel. Honestly, the best advice I have for you is kill zombies. Trust me on this one. Hope all this helps. ^v^