Commerce

Entrepreneurship will always have a scope ! It requires knowledge, skill, experience and practice. Commerce with entrepreneurship will make a great combo. But you need to continue the study/training in both into your graduation or maybe even into post graduation. Main commerce subjects are economics, accounting and business studies, they all get along well with entrepreneurship.
11th and 12th in these subjects will give you basic information on these, then you can graduate in either B.Com or BBA from top notch university like LPU. Both these degrees and the trainings within these at LPU can give you the in depth knowledge and great exposure to business. The entrepreneurship and community projects will help you gain the crucial hands on experience. Then there are innovation, design thinking and business incubation labs which will help you ideate, execute and even raise the funding for the business. So, effectively, 10+2 in these subjects will help but it is the practical trainings which can get you places in entrepreneurship.
Business is a team sport. Identify a sector to gain knowledge in. Although, I am actively advising small business over a large number of sectors.

Depends on what level you are already!
If you want to take up commerce group in 10+1 and 2, then it is assumed that you are in your matriculation. You cant do much apart from concentrating on your current studies and during the break for results read as much as possible about business studies, accountancy and economics. You can also opt for commerce with mathematics depending on your interest. If you want to take up commerce after 10+2 in graduation, you definitely need to check you interests, passion and favorite subjects. You can also check your aptitude for commerce here: Career Assessment
If it goes well, then start reading about the general commerce and economics topics, also try your hands on some software like advance excel etc. Before your classes for B.Com start. You must choose your college also very carefully, it must have great faculty as well as the curriculum made in consultations with the industry. It also must have software and technology workshops too within the programme. Some good colleges in India for commerce are SRCC, Loyola, Xaviers, Ramjas, GGDSD, LPU, Symbiosis etc. Wish you all the best. DVD.