CBSE 12th

You should focus on you 12th class subjects because in entrance exam they asked aptitude questions and from you commerce subject also.

Yes you apply for B.Com even if your are Science background stream student for further details you can check through online process.

You can do yoga and dance along with you commerce student as side course it would be preferable commerce as these courses can work along with studies too.

There would be many options for admission you can apply offline or you may visit your preferred college you may get admission easily in commerce.

You select your college as per your percentage by filling online forms through university portal or you can visit your preferred college and ask for percentage cut off for admission.

You can apply through online portal for the degree college or you can visit college offline to get process of offline admission.

In 85% its difficult to get in a good college of Delhi University but you might get admission in Kolkata University.

The requirements for admission to a Bachelor of Physical Education (B. P. E. d) programme can vary depending on the institution. However, typically, a 12th class Certificate with Physics is a requirement for entry into a B. P. E. d programme. If you don't have Physics certificates but have Physics in 12th you should contact the institution where you want to take admission and inquire about their specific requirements and any exceptions that may be made. Some institutions may have alternative requirements or may be willing to accept equivalent qualifications or experience.

Yes, you can apply for it but you have to face Maths subject in one semester only.

Yes you can study abroad there are many colleges in Germany invites students for many courses, all the best I hope you have got good marks in 12th apply to the University online. All the best
Thanks.