Admission to B.Com. is generally based on either the scoring in 10+2 or a competitive exam depending upon the reputation of the institution you choose for your studies.
If you have a more liking and interest in commerce stream as compared to the science then it makes sense to do so otherwise if you are doing it just to get rid of the science fear then it may not prove as a viable option.
So these things are to be decided with a conscious and constructive approach.
If you have interest in commerce then going later for CA will definitely be a prospective thing to make a brilliant career in this line. CA is the topmost career option in commerce stream.
After doing B.Com., one has options to try for the job positions like -
Accountant, Tax Consultant, Banker, Human Resource, BPO / KPO, Auditor, Stock Broker, Export Import Manager, Finance Consultant, Cost & Work Accountant, Company Secretary, Event Manager, Travel Agent / Travel Manager, Government Jobs, Market Researcher and Economist.
So there is a wide range of the areas to choose from. Only thing is one has to put in the best efforts with hard work and sustained studies to score the best possible marks in the exams (B.Com/ M.Com./ CA etc) so that one can compete in the tough job market today.
Knowledge is power.