After B.Sc, I am thinking of doing BCA. Can I do? What will be the scope after this?

Do Masters (MCA, MBA, M.Sc). It will be a good option and why do you want to do Bachelor again, that too BCA?

Yes, you can do it easily and do not think about the scope. If you do your the best then no one can remove from your post. Good luck.

There are lots of job opportunities for graduates in computer application in private sector. Many private sector companies recruit Bachelor in computer application graduates. These are mainly the software companies. The career scope for BCA graduates is private sector is not limited to software comp

If you have done B.Sc in IT/CS then opting for BCA will not be any use to you but if you have done B.Sc in some other field then you must opt for MCA from a good college instead BCA.