greetings,

both the courses are different. it depends on your interest.

bba is a professional degree so if you want a career in MNCs and the corporate world go for bba.

if you want a government job, bsc is better.

however since you are doing bsc right now, i will not suggest you to drop a year for bba.

you can do mba even after studying bsc.

hope this helps.

good luck