What is considered a "good" score?
Depends on, among other things, where you are, the competition you're up against, and whether you think good is better than average, medaling, winning....
We know that last time booms ran, National winner was mid-sixes, so, a lower bound on "good."
Purely a guess- I'm thinking in most States (for a C-div boom), for Regionals, under 15gr (carrying full load)- 1,000 points - gets you into top 5; 12-ish gives you a good shot at winning (12-1300 points); by State, maybe a gram or two off those numbers.... It's going to vary a lot by State and Region