Hi Shubhampsharma.
Nice work so far.
You can go through your test and mark each question as that you
- got it correct in way that makes sense
- got it correct but took too long
- got it correct but not because you really knew how but guessed correctly or fumbled your way to an answer
- got it incorrect
For the last three sets of questions, analyze each question to determine what went wrong and what you need to do differently to get such a question correct in the future.
Then, address each issue you found by reviewing or learning concepts and strategies if necessary and doing topic-focused practice.
For more detail on how to use practice tests, see this post.
GMAT Practice Test Strategy