A normal stage which every student undergo is the confusion of selecting the best option as a carrer. When you have many doubts as to choose the right one, it is always good to visit a carrer councellor who would be able to guide you and your parents with the best opportunities and options that is open in front of you. As you have given your +2 or HSC in commerce, there are some common branches that one can select but as already mentioned, the best is to choose the best that would take you to heights and selecting it is what matters.
Some of the options available in front of you are:
i) Undergraduate degree in Commerce - As you are a commerce student, you can go for a degree course in commerce i.e. Bachelor of Commerce(B.Com) in Accounting and Commerce / Banking/ Finance/ Taxation) which is a 3 years course after 12th.
ii) Dual or Integrated degree - After your 12th, as you are intrested in Law, you can go for a dual degree course which would be a i.e. B.Com + LLB(4 years course) or BBA + MBA program (5 years duration) provided it is from a recoganised and approved intitute or university.
iii) Chartered Accountancy (CA) - After 12th standard, you can register and appear in the CA Foundation Exam which is the entry level test to pursue the Chartered Accountancy course. After passing the course, you can join the CA course.
iv) Other degree course - Some of the other undergraduate courses that one can join after 12th commerce are: Bachelor of Journalism (BJ), Bachelor of Mass Media (BMM), BA in Hospitality & Travel, Bachelor of Business Administration (BBA)/ Bachelor of Management Studies
(BMS), BCA (IT and Software), Bachelor of Economics, Company Secretary (CS), BA in Humanities & Social Sciences, Bachelor of Design in Animation(BDes), BA LLB, Bachelor of Statistics, Cost and Management Accountant (CMA), etc.
v) Diploma Courses - Some of the diploma course that can be completed after 12th with commerce stream are: Financial Accounting, Hotel Management, Physical Education, Computer Application, Yoga, Industrial Safety, Retail Management, Digital Marketing, Diploma in Education (DEd), etc.