Yes, for AP (Advanced Placement classes), an A = 5 points, B = 4 points, etc. In addition, AP classes are college level classes and the credits transfer with you to college. My son was accepted by UCLA and with his college-level AP credits, he entered as a freshman who was one credit short of being a sophomore. He graduated in three years.
That’s really impressive. You must be proud. I bet he got to pick his salary and where he wanted to work. I’m sure companies were lining up.