Haven't taken it, but pretty sure they don't give explanations or 3 digit score. I think they just give you a percent? (Could be wrong, but I went hunting for the answers to these very questions around the interwebs and didn't like what I found, so ended up deciding not to invest 7 hours into a Kaplan test)
call their customer support? I remember calling them about an issue before, & a customer rep got to me pretty quick, so it might be a faster way to get your Q answered.
Also please post here once you find the answer, i'm also curious 🙂