My first safety-rated drive was about 50 miles, nearly all on the interstate, no AP. I drove like a grandma with Prius. 100% One-pedal driving. I expected a 100 rating and was surprised to see my first score was 86. I got dinged for "hard braking" (with regen I didn't think that was possible) and "aggressive turning" (on and off ramps, I guess).
On the return trip, I used AP as soon as I got on the highway and kept it on the whole way home. Telsa rated itself at 100.
So now I have an average score of 93.
I hope when people start getting FSD through the button system they'll post their winning scores and state.