I hve completed bsc with maths I'm doing bank coaching please suggest me which computer course should i do which would be beneficial for me

I hve completed bsc with maths n hve 1 year computer diploma write now I'm preparing for bank .I want to do MCA along with it but some are suggesting that do some computer course plz suggest me either i do MCA or any computer course n which computer course should i do that will be beneficial for me