B.Com

No, it's not compulsory to add this subject in best four.

yes, you can take physical education in your best four subjects.
good luck

After considering the compulsory subjects like English and then subjects of the respected streams, like maths and science, then you can include any subjects as your best.

Hi Khyati,Yes, you can become TGT of mathematics after doing B.Com (hon) or B.Com plus B.Ed. All the Best.

Yes, your marks are good enough to get admission here. You should apply for admission.

Hi,
Yes, there are high chances that you will get admission in Maitreyi College. The cut-off will fall in the subsequent lists.
All the best.

You need to fill the forms of top college of PU for admission and then you will get admission on merit basis.

It's very hard because you don't have good marks but I would suggest you prepare for any competitive exam like GRE then you definitely can get a good foreign university.
Best of luck.

No, you cannot include physical education in best four subjects.
For admission in B.Com at Ramjas College, you need a minimum of 40% marks in 10+2 examination in best four subjects which include one language and three best elective subjects.

For comparison of the both colleges, you can use the college comparison tool:
https://www.shiksha.com/resources/college-comparison.