Hello palak jain,
Yes, you may get admission at Delhi university in BBA. as the cutoff for every year is different. I advise you to give your best on the entrance exam as the cutoff is unpredictable, no one can predict the cut off before the exam but you can check out the last year cut off of DUJAT at careers 360 official website and can assume accordingly. And with your 10+2 percentage which is 75% you are eligible to give the entrance exam of DUJAT.
I hope this helps you out. If there is anything else that I can help you with, then please let me know.
Till then, all the very best. Stay home and stay safe.