Replying to Any Engineers out there

Going to be a senior in highschool and thinking about engineering. Im currently writing my apps for Boulder, UW madison, Montana State, N. Michigan, and possibly U of U. I didn't do too hot on my AB Calc Ap test, but got decent grades both semesters. Im also taking BC next year, along with AP physics, i took the honors physics class this year.. Anyone in the field/older have any experience with grades in relation to success in college. I enjoy engineering but I feel like I dont have the grades/scores.
Take it easy