What do you mean by “struggling”? Do you mean “It’s going to be difficult for me to get an A, so maybe I’ll end up with a B” struggling", is it “I hope for a B, but I’ll likely get a C” struggling, or is it “I just hope that I don’t fail” struggling?
If it’s the first, it may be the material is boring and/or the teacher isn’t good for you, and you could probably even do AP Calc BC. My kid got Bs in both semesters of Pre-Calc, and got A’s in both semesters of AP Calc BC.
If it’s the second, I would say that you should maybe try AP Calc AB, since you want to go into business. On the other hand, you may feel that you’ll be able to do better in Calc as a college freshman, so perhaps go for AP Stats.
If it’s the last, you may want to reconsider your major. Some really smart people have a difficult time with some types of math, but, unfortunately, business requires being decent at algebra and calculus.