Maths Spl

Hello Binay,
You should not get too fascinated with ethical hacker as they show in movies. Most of the institutes provide just a basic fancy course under the name of ethical hacking, just to attract students and earn more.
I would rather recommend you to go for security specialist professionals. These jobs are highly payable and in high demand as most companies need them to protect their own data.
For the same, you can go to some reputed computer training institutes like NIIT, etc. You can go for Java courses followed by networking courses and CCNA/ CCNB (CISCO) courses. After this, you can also opt for CEH (Certified Ethical Hacker) certification courses, if you wish to.
You can do these courses alongside a degree course BCA, B.Tech or B.Sc for better outcome.
I hope it helps. If so, kindly upvote this answer. If you've any further questions, kindly revert.

There is no fix formula. Such cases are solved selectively.
Nowadays Competition is high so one should have master degree in order to get handsome salary.
I suggest you to go for Master degree after completing your Bachelor's degree.
As per official website of DU SOL,Placement cell is active and average package that offered last year was 2.2LPA,So Prepare well Go through your past academics.Delhi University School of Open Learning is a popular destination for correspondence education and is acceptable for higher studies or jobs as well.
I may suggest you to pick CA, CS or ICWA simultaneously with B.Com so that you have ample opportunities.