What are my chances of getting into Harvard?

High school Senior 3.8 UGPA, 4.2 WGPA, Top 5% off class(21 out of 500),34 ACT,2120SAT(Will retake this Saturday)
AP Test Calculus 5,AP Language 5, AP US History 4 Euro AP 3.Taking 4 more AP classes senior year.
Played volleyball since middle school team captain this year.
Lead tutor in Math school tutoring aimed toward at-risk youth
Volunteer volleyball coach in community.
Eve and Gene Black program attendee for future pediatricians
I am also Native American-not federally recognized but recognized on the state level.
Formed Native American club at school. Organized a book drive to get books to needy Native American schools
Volunteer at Kitten Rescue.
There are a few more EC’s that I could list but don’t want to get carried away. What areas do I need to improve on?

You don’t really present a distinguishing factor that would solidify your chances. You are URM (I think?), but other than writing great essays, there isn’t much you can change.