You have to choose any of the fields,which you are interested in. You are studying PCB then you can go for Medical fields. If not interested then you can fields of Basic sciences such as:

• BSc in Genome Science
• BSc in Genetics
• BSc in Microbiology
• Bsc in Biochemistry
• BSc in Animal Sciences/Zoology/Botany

If you want to go for the Management courses then you can go for then you can go for Hospitality Management , HR, Finnance etc in BBA courses.

If you want English honour is also a good course. Apart from english honour comparitive Literature can also be a great career option.

I would recommend you to choose what ever you like as a subject of study.

To know more about the courses after 10+2 PCB visit the link below:

https://school.careers360.com/articles/courses-after-12th-pcb

I hope this answer helps. All the very best for your future endeavors!