Hello Sanket,

Just by focusing on NCERT you cannot expect to score more than 270 to a maximum of 300 out of 360 in the NEET examination that too if you are absolutely thorough with all the topics and minimize or negative marking in the examination by not attempting the questions which are out of your knowledge.

However, some experience gathered through biology series of Dinesh and Pradeep can help you to score in excess of 330.

Hope this helps, thank you

Dear Sanket,

You can score good marks in biology section by studying NCERT books as mostly questions are from there only. Make sure you solve all the exercises which are given at the end of each chapter. 

About 90%-95% questions in NEET are from NCERT books only. 

For rest of the questions you should solve previous year questions.

Good Luck!!