Hello Aspirant,
Seeing your NATA score, there are a lot of Architecture colleges in India accepting NATA score, you can see the preferred college available for you that accept NATA score given below,
https://engineering.careers360.com/colleges/list-of-government-engineering-colleges-in-india-accepting-nata
But also remember that the cutoff for admission varies and changes every year depending upon your category and score taken into consideration by the authorities.
For the registration process, you must qualify for councelling rounds. For this , you must regularly check the official website of the institute.
For more information about the Registration process, view full information and details given in the article below,
https://engineering.careers360.com/articles/nata-counselling
Good luck
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