Hello Ashu,
After you have successfully completed BSc course of 3 years, it is always advisable to opt for higher studies i.e. MSc for another 2 years. If you have a Master's degree, it increases your chances of getting jobs. Also, you can make a career in teaching, research field or can have a PhD degree as well. Doing just BSc does not have much value for job recruitment but MSc degree does provide you with a good opportunity of jobs in future.
Good luck!
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