How much does a good score on ACT/SAT increase my chances whereas I can waive them?

@skieurope the low number of undergraduate students from Iran isn’t caused by their quality or low chance of admission, the main factor is the low number of applicants and difficulties they should struggle with. Most of the people in my country even don’t know there’s a chance for them to apply for undergraduate!!
But Iran has a very high brain drain rate that is for masters and Ph.D. degrees which shows Iranian students are of high quality.
In addition, I think that I could be one of those rarely admitted students because despite all the difficulties amongst girls in Iran I accomplished and I’ve got a Math Olympiad medal and I’m prepared and strong academically. I also have an inspirational life story to write about in my essays which are so important.
finally, I don’t think admission team care so much about which country you come from, at least it’s what they’ve claimed.