Hi , 

So for detailed information regarding architecture at this university  , check this link.

https://www.careers360.com/university/gautam-buddha-university-greater-noida/barch-course

The minimum cutoff at GBU for B arch is 40% in NATA. Since you have scored above it , you are eligible for applying there . 121 is a good score . But whether or not you will get admission depends on the scores of other candidates applying there since there is no particular closing rank as such for this course mentioned.  

So it is worth a try . Hope you will get admission.  The last date for submission of application is June 22. 

Hope this was helpful. 

For further queries please approach careers360.