Dear candidate, it depends on which type of colleges you are talking about. If you are talking about Engineering, Medical or Law then do not wait for board results as JEE/NEET/CLAT application registrations have already started. Check about your college/courses, which you are aiming for. If application registrations have started then start applying and not wait for board results. Some colleges like Delhi University and colleges which take admission in BA/BSc courses usually open applications after board results. So, keep on checking when your college opens admission.

Hope, it helps!