IB Scores for Ivy league recruits

What is a good IB score for an athletic recruit to try for in the IB diploma curriculum? Is a 39/42 a good enough score ?

I don’t think it matters since those scores won’t be available at the time of admission (aren’t those tests taken at the end of senior year?). It’s the ACT or SAT scores that matter.

I meant the IB predicted grades and IB1 grades

If you are coming from a US school, it won’t mean a thing. The Ivy schools are just interested in your transcript and test scores. If you are an international, then I would suggest talking to your recruiting coach.