How can a H4 Visa get involved in the International Chemistry or Physics Olympiad?

Pre-College Issues High School Life
1

I was wondering, how would an H4 Visa student do the International Chemistry Olympiad or International Physics Olympiad?
While I’m an H4 Visa student in the United States (Iowa), I happen to be an Indian Citizen. At this point, it doesn’t even seem possible. It seems that all test centers in India are in India, while to compete in the US Chemistry or Physics Olympiads, you need to be an American Citizen.
So, is there any way for me to get involved in these olympiads? Or is it truly impossible?

2

Or permanent resident.

No. But but attending a HS in the US would make you eligible for the math olympiad.