Hello Manikantha

Yes,BA in Political Science Hons is very beneficial if your aim is to crack SSC CGL,because in BA in Political Science the course is related to History,Geography and Polity,which is also in course of SSC CGL. Although there are many other topics like GK,Current Affairs which you can read by books or newspaper.

If you want some other courses,i would suggest you to do BE/B.tech or any courses related to Mathematics because they have a section of Maths and it comes for huge marks,so it does matter a lot in exam if you have good maths it would be benficial.

I hope This Helps

Best Of LucK!!!