If you are wiling to go for a Government job after the 12th then you have the examination such as-

• SSC CHSL
• State Police service
• Railway and other class 12 level examination

Now if you wish to complete your UG course, then  you have a wide range of examination eligible for. For example if you complete your UG in Agriculture then you can become Agriculture Officer, if you complete your MBBS then you can become a Government Hospital doctor, if you graduate in any stream then you can appear for the Civil Service examination. So you have a lot of scope after graduation compared to that of class 12.

For the courses you can study after your 12th with PCB, consider the link below:

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

I hope this helps. Wish you a great day!