Go to each university’s page for the business management course and look at entry requirements.
For example, Edinburgh is asking for A Levels: AAA - ABB.
An A at A Level = 5 on AP and 800 on SAT Subject Test.
I understand that SAT Subject Tests are not considered as good as APs, and APs are not as good as A Levels.
https://www.ed.ac.uk/studying/undergraduate/degrees/index.php?action=programme&code=N100
Glasgow is lower at ABB - BBB but Kings wants A*AA.
You are very likely to be offered a place but it is likely conditional on your next set of SAT Subject Tests, as you only currently have 2 and they want 3. They WILL look your GPA and SAT score too, they won’t totally discard it. Will they be more lenient because of your American dollars? Maybe…