Do I need math as a Scottish higher for business

as an international undergraduate student I hope to apply to USC, Berkeley of business (and most other UC uni’s) and to UCLA for business and economics, I’m also going to sit the SAT reasoning test, I have math as a GCSE.
will I need (Scottish) higher maths to be accepted to these courses ? will I need any specific classes at higher and are these business courses hard to get into.

answers to any of these questions would be helpful

I would post in the Internaionalthread whom would be more familar with the Scottish education system.