Hi, so basically the criteria for BCA is that you should have a mathematical background and the fact that you are have cleared your maths from NIOS would do just fine.

Just look for the colleges near you if you are looking for colleges nearby, and apply for your BCA course.

BCA as in Bachelor's Of Computer Application is really a great course to pursue. It is very job oriented and can help you build a nice carrier.

Just start working on your programming skills and you can get a great salary package.

Hope this is helpful