Hey Manu! Congratulations for your result!
Bachelors of Science(Honours) in Mathematics is a three-year full-time undergraduate degree course offered by many universities across India. Most of the universities select students on the basis of merit; some do consider entrance score though.
In University of Delhi, chances of admission in top colleges(St. Stephen's, Hindu, Hansraj, Ramjas, etc.) based on your percentage are good. Remember to check the admission link regularly, fill the form and wait for cut offs. You might secure admission in both on- and off-campus colleges. However, if you wish to secure admission in north campus colleges, I think you will need to wait for 3rd or 4th cut off. It would be better if you secure a seat in any good college as soon as cutoffs are released.
All the best!
https://drive.google.com/file/d/1nfk5TGZ9Vt8YhYYxBxAkQQ1nznLUsYzy/view
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile