Dear Vaishnavi as you are from commerce background if you want to continue in the field of commerce you can do - Bachelor of Commerce, Bachelor in economics, Bachelor of business administration, Bachelor of management studies, CA, CS, CMA, CFP etc.

If you have an interest in interior designing, fashion you can choose these stream also, all depend upon your interest. Choose wisely dear Vaishnavi.

All the best have a bright future ahead.

Hi Vaishnavi.
After Class 12 with commerce you can either go for CA or CS, both highly valued professional careers.
Some other popular courses you can consider are the as follows :

• Bachelor's in Business Administration/Management (BBA/BBM)
• Bachelor's in Management Studies (BMS)
• Bachelor's in Banking and Insurance (BBI)
• Bachelor's in Accounting & Finance (BAF)
• Bachelor's in Financial Markets (BFM)
• Bachelor's in Mass Media (BMM)

With any of these courses you can choose a career in any of the following :
Human Resources, Finance & Accounting, Operations, Marketing & Branding, Sales & Business Development, Customer Service, Research and Academics, Journalism, etc.
You can also go for UPSC and other exams to get employed in the government sector.
Hope this helps.

Hey.

There are various  study options after 12th from Commerce.a few of them are-

Bcom (P)

Bcom (Hons)

BBA

BA Economics (Hons)

BA LLB/ Bcom LLB/ BBA LLB

BMS- Bachelors in Management Studies

Bachelors of Foreign Trade

Retail Management 

CA/ CS/CMA

Hotel Management 

Journalism and Mass Media Courses

Event Management 

Fashion Designing

Best of luck!