hi

As per your query for NATA exam you need to score 80/200 to be eligible for architecture.  if you pass the cutoff you will be able to get a seat in any college of your choice but in NATA there is no common counselling and you need to apply to  various colleges one by one. On the basis of number of seats available and number of applications they will create their own merit list and accordingly you will get admission. As per the 2019 NATA regulations you have to get a minimum of 50% Marks in physics, chemistry and mathematics and an aggregate of  50%  in board examinations. CUT off scores vary every year based on the number of candidates and number of seats available. Try to score above 90 in NATA and keep a good score in your board examination.

for more info:

https://engineering.careers360.com/articles/nata

hope this helps