Hi Amrita

As you might be aware that New Education Policy-2020 has made it easy and possible for everyone to pursue any course of student's choice so that applies to you as well. No matter if you were a Science/Commerce/Arts student in class 12 you can still pursue BBA. Since you want to pursue it from Delhi University and you had science in class 12 I presume that you had mathematics as a subject, if that is so then you are eligible to pursue BBA from Delhi University. All you have to do is that you just have to clear CUET exam that would be conducted by NTA this year and if you make then then you are good to go to take admission in Delhi University for BBA.