Sir I belong lower middle class family I am doing bsc now their is gap between my 12th and bsc due to problem what should I do after bsc
You xan pursue any coursebase don interest like Msc, MBa, Masters, Integrated Msc+PHd based on what interests uou and where your aptitude lies.
Gap between 12th and Bsc doesnt matter much as long as you have good academics in graduation and great functional domain knowledge and good resume.