If you are asking about Neurologist then the answer is as follows:- 

• To become a Neurologist you must start preparing from the beginning. That is a candidate must take Science in 11th Standard with compulsory subjects as Physics, Chemistry and Biology with English. While in 12th standard you have to give NEET Exam conducted by National Testing Agency (NTA). To be eligible to give NEET exam :-
• A candidate must have taken Physics, Chemistry and Biology is mentioned above. 
• Must have scored at least 50% in 12th standard. 
• Age must be in between 17-25.

Remember:- Start preparing for NEET from 11th standard itself so that you don't have to face difficulties later on. 

NEET Exam is for those candidates who want to become a doctor. It offers various courses such as MBBS,  BHMS,  etc. 

To be a Neurologist you can do MBBS by applying for NEET and then go for specialization in Neurology. Remember start preparing for NEET from 11th standard itself as you need to score well to get admission for MBBS. 

Note :-  NEET is only one exam there are other exams like JIPMER too and also if you want admission in Private Institutes then mostly the respective Institute conducts their own respective entrance exam. 

If you still have any queries feel free to ask in the comment section down below. 

Hey 

Shubham good that you have a thought in mind as to what you want to do in your life 

you should join some medical coaching because Neurology is a specialisation that comes after MBBS 

so for that you have to prepare for NEET-UG & get a good college for MBBS 

once you get in you learn a lot about the nervous system .It is one of the most important systems that you’ll be dealing with

after you finish your mbbs you will have to appear for NEET-PG & get a high score to get what your specialisation. 

It’s a long road 

best of luck