B.Com

If you have scored more than 80 percent in 12th, then definitely you can get addmission in SD College

Yes, boy's hostel is there. But it's under construction right now and it will take at least 2 years to be run.
Fees of B.com depends upon your stream, but generally it varies from INR 25000 to 35000 a year

Yes, many private colleges are taking admission. But government colleges admission is closed.

AMU can be the best among all.

You need to contact your regional centers for classes and assignment-related queries.

No Maths is not compulsory in many top colleges and universities for doing Hons. In Eco. And B.Com.

There are many colleges for B.Com
Srcc stands for number one
Loyola, christ, st Xavier, BHU, Narsee, Ramjas, Symbiosis are some top colleges for pursuing B.Com.

You can choose either of the courses but make sure to opt for the correct specialization (like entrepreneurship development). The degree is not going to matter for starting a business. What matters is, what you learn from the course and your creativity. You can also do certificate courses apart from your degree in Entrepreneurship which will help you more than the degree.

You can refer to the following link -
https://www.shiksha.com/college/impact-college-of-engineering-and-applied-sciences-sahakara-nagar-bangalore-38911

You can refer to the following link -
https://www.shiksha.com/college/oriental-school-of-hotel-management-wayanad-20810