Math class after finished AP Cal BC [in 10th grade; for 11th-12th grade: AP statistics, college math courses like MVC, LA, DE]

For math heavy majors, it is likely that calculus-based statistics will be required or more useful than non-calculus-based introductory statistics which is what AP statistics is.

AP statistics in high school can be useful as a way of determining your interest in statistics or statistics-heavy subjects (like econometrics in economics or industrial engineering / operations research), even though it may not give useful subject credit or advanced placement for such a major.