You can get admission under Sikh Minority in the following DU colleges: Shri Guru Tegh Bahadur Khalsa College and Mata Sundri College for women. The former is situated in North Campus, University of Delhi and is fairly prestigious.
You'll be eligible for admission under Sikh Minority category for sure.
But if you want to be perfectly sure about you getting a seat, do access this link:
Delhi University (DU) College Predictor 2020 - Predict Colleges Based on your Percentage
DU College Predictor 2020 - Predict Colleges based on your 12th percentage. Know your admission chances in Delhi University's Science, Comme ...
All the best!