Hello Ritik,
BCA is very good option to build your career in IT Industry.
Many Universities all over India offer BCA.
Procedure of get admitted in BCA:
Successfully crack 10+2 or equivalent exam from science stream, some universities offer BCA with having science background, but having Mathematics as main subject in 12th is mandatory to get admitted in BCA.
Entrance Exams are conducted by the corresponding Universities/Colleges for admission, there is also option for direct admission regarding your 12th result.
If  you get admitted to BCA, I will automatically know how to do MCA.
There are some list of Top BCA/MCA colleges, in the given link:
https://it.careers360.com/college/best-fit