Hi

The marks which you can get through only NCERT depends upon how well you have gone through it and it will vary from person to person depending upon their understanding of the concepts etc, in my personal experience if you go through just NCERT  you can get at least 500 + marks or more

Here's my personal  experience :-

I had appeared  in neet 2019 , but I hadn't  prepared  for it , I was in cbse board and was just  preparing  for my boards and for that I was using  only  ncert for biology and chemistry  and for Physics I was using  Sl Arora for theory along with ncert .  I did well in boards :) got 90.2 % but neet ? Ended up with just 520 marks  in neet and couldn't get a seat
Biology :- 280 marks
Chemistry :- 124 marks
Physics  :- 116 marks

So , one can easily  score  at least  500+ if goes well through  ncert .

While  giving  neet I realised  three things  :-

*ncert biology is enough for neet ,no need to read anything  else but why I just got 280 ? I had never  practiced mcqs as was just preparing  for boards , and also I hadn't  studied  ncert  from  mcqs point of view , for that you need to go thoroughly  through each and every  line  of ncert

*Chemistry  :- Again , nothing  was out of the box  or ncert . But I didn't remember many concepts of class 11th  and few questions had lengthy calculations.

* Physics :- Except for 6-7 questions , all were formula based. Nothing  very  tricky. You just need to have good command over the formulas and should have good speed

So, where does ncert lack ?

* it doesn't  have questions as per neet pattern
* it doesn't have mcqs .
* Many topics are difficult  to understand.

Also , In neet exam there's  180 questions  and you get 180 minutes  means only 1 minute for 1 question . So , practising  mcqs becomes very  important.

So, to score well you can follow given below books which are listed below subject wise

PHYSICS :-

*NCERT Physics textbooks for Class XI and XII

*Objective Physics for neet By DC Pandey :- it has MCQs and numericals as per Neet examination pattern and level

CHEMISTRY :-

*NCERT Chemistry textbooks for Class XI and XII :- Ncert chemistry is really good for Neet, go through all the solved examples, intext questions and exercise questions

* Mtg NCERT at your fingertips for chemistry :- it has chapter wise quick recap or short notes, and topic wise MCQs are there aligned with NCERT etc

BIOLOGY

*NCERT Biology Class XI and Class XII "- Master it as around 98 % questions in neet biology are directly based on ncert .

*NCERT at your fingertips by mtg :- best for practicing MCQs for your neet

*Trueman biology :- good for understanding topics which are difficult to understand from NCERT

Also go through Neet Previous year chapter wise book by Arihant for each of Physics, Chemistry and Biology and once you are done with the complete syllabus go through mock test paper.

For detailed information go through :-

https://medicine.careers360.com/articles/best-books-for-neet/amp

If you have any other doubt then feel free to ask them :) we are always available to help you out and guide you

Thankyou