Hi

You have not mentioned the category you belong to so I am  assuming  you from general category if you belong to any other category then do let me know in comment

In neet 2019,  476 marks was the lowest marks that was required for general category for getting a mbbs seat in a government medical college under J&K 100% state quota and it was for Government Medical College, Rajouri

You can check the same at

https://medicine.careers360.com/articles/neet-cutoff-j-k/amp

But cut off marks  keeps changing every year depending upon various factors like number of students that appeared in the exam, kind of marks obtained by them , toughness level of the examination etc.

So , you should try to get at least around 500 marks to be on the safer side in your neet  examination

Thankyou