Hey Neha!

If you had applied for undergraduate admissions in University of Delhi(DU), then you will be eligible to apply for colleges under ug programme when the admission cut offs are released for applying by the candidates. Make sure you are logging in through the same email ID which you had used to register for admissions in University of Delhi. As of now, you don't have to do anything. If you had applied, then will be eligible to apply for the colleges. But as of now, you don't have to apply for colleges.