Hey
Don't he worried
After completion of 12th In Commerce ,these are some courses you can go for...
B com,BBA,BMS,BFA,BCA,also you can go for CA,You can go for integrated law course,and many more other courses.
After a successful degree completion,there are various career options/ job opportunities are as follows:
Chartered accountant,company secretary,cost and management accountant,bank officer,teacher,professor,etc.
Well,everything depends on your interest regarding this field.
See,now you are studying in 11 th commerce,So First of all I would suggest you to complete your 12th std with good score.
And see,if you are a hard working student and ready to take in depth knowledge then you will definitely give your best whichever course you choose,after 12th

Think on that
Hope this helps.
Good luck.