Have you tried reaching out to Harvard to see what their requirements are? You'll find that most students have similar academics profiles and academic level of achievement. You'll need differentiate yourself outside of this. Did you participate in any major academic competitions, science fairs, research symposiums, or participate in an collegiate committees? They want to know how do you plan to change the world.
Sam recommends the following next steps:
- Suggested read: https://blog.prepscholar.com/how-to-get-into-harvard-and-the-ivy-league-by-a-harvard-alum#part5