Dear aspirant

Answering to your question I would like to say that of course you can go for BCA after passing Vocational stream, if you had Mathematics as a subject in 10+2, and subsequently have scored a pass mark in the same. After BCA, you can go for MCA too, where you will learn more about the core concepts of Computer Science, and which is a good option for getting a job, as well as getting a good exposure in the field of IT. Get admission in a good college/university where BCA and MCA courses are offered. You will surely succeed. I wish you all the best for your future.

Hope this was helpful!