Hi Yashika,
                    Yes definitely, if you can able to do MBA from top 20-30 B-Schools, then you can earn much & will have a great career.
But look scopes is where, you have to just dig it out. If you like physcology, so first you do BA. After BA if you found your interest in management field, then you can join. Suppose in future You found your interest in other sectors. So first you have to try or at least know about the thing. Then decide.
First you complete your graduation degree or if you're seeking management field, so do just graduation, & work hard for CAT from the beginning.
Yes it's true, rather than physcology, you will get huge scope in management sector & if you able to do MBA from top IIM'S or top any other B-Schools like - fms, Spjain, MDI etc;you can earn upto 1lkhs + per month or more than that, all depends on your performance. So, decide what you want to do.
My work is help you to find your way but have to walk alone in that way.
Hope you get it. All the best for your future.