MCA

Usually, all institutes offer admission in MCA on the basis of entrance test results. However, you may try and check with some of the private colleges near your location.

Hello,
By qualifying JAM Test, candidates can apply for:
1 M. Sc (Two Year)
2 Joint M. Sc. - Ph.D
3 M. Sc - Ph.D Dual Degree
4 M. Sc - M.Tech
5 Post - Bachelor Degree Courses at different IITs
6 Integrated Ph.D Courses at IISC
For more details visit here - http://entranceexaminformation.blogspot.com/2016/07/iit-jam-entrance-test-queries-most.html
I hope it will help you.
Best of luck.

You need to pursue 3 years MCA after completing B.Com. Only BCA students in some universities are given the lateral entry in second or third semester directly.

If you are not from an engineering background, then you must join a good coaching institute. You need to improve your maths. You should have sound decision-making skills.

If you are good in programming then go for MCA otherwise MBA is best, but I personally suggest you for MBA because it has good opportunities than IT field.

Yes, you can apply for BCA without mathematics. You need to contact your nearest college and apply for the next batch.

If you are interested in software jobs then you should go for short term courses like DOT NET, Java, C+, ORACLE, LINUX, etc.