B.Com

According to the eligibility criteria, you are eligible for this course.

Yes, it is available.
To get admission in this course, you have to apply for the entrance exam.
All the best.

You can continue with CA coaching as there is most of the syllabus of B.Com is same as CA. It will become easy to become a CA. But you have to go for correspondence B.Com which is offered by SCHOOL OF OPEN LEARNING (SOL) DU.

80-90 percentage is required to get a seat in DU.

INR 12,345 is the total fee of B.Com (Hons) in Dr. Bhim Rao Ambedkar College.
https://www.shiksha.com/accounting-commerce/course/b-com-hons-dr-bhim-rao-ambedkar-college-yamuna-vihar-delhi-53863

ELIGIBILITY CRITERIA :
The candidate must have passed 10+2 in relevant stream from recognized board.
ADMISSION GUIDELINES :
Selection shall be made on the basis of marks obtained in qualifying examination.
https://www.shiksha.com/college/sri-guru-gobind-singh-college-chandigarh-9233

If want to get admission by entrance so this very good. You can apply for UGAT which is conduct by AIMA (All india management association)for B.Com BBA BCA. Many universities like LPU, birla institution are participate in this exam. Minimum 50% marks are required for this. For more information visit following link-
www.aima.in
Good luck.

To get admission, you need to score more than 50% in your 12th and need to fill the online admission form.