Nerdy science kid wanting to know how hard+long acca will be just gave alevels

Hey so i am from Pakistan and have loved science also studied economics along with triple science in alevels basically concerned if ill be able to adapt to accountancy. I want to know how long this degree takes if ur a motivated full time student and what are the employability options plus the kind of salaries acca graduates get? Also wanted to know what kind of questions do you have to answer are they the long essay kind (because i hate those)?