Hello Parthiv,

Firstly congratulations for your JEE Main paper 2 score. Since you have got 185 marks in JEE Main paper 2, it means that your percentile will lie between 99.07 - 99.26 in JEE Main paper 2. Now to get colleges for B.Arch like NITs,GFTIs you have to attend the JoSAA counselling process. Since you are JEE Main qualified but by any chance didn't get a seat through JoSAA counselling process, then you can apply for CSAB counselling through which you can get a seat in NITs,GFTIs,SFTIs. This particular counselling will begin after the end of JoSAA ciunselling. For other colleges those who accept JEE Main paper 2 score but doesn't participate in JoSAA, for them you have to attend their respective counselling sessions. 

You can go through this link and checkout the details regarding JoSAA counselling  :  https://engineering.careers360.com/articles/josaa-counselling

Also, visit this link and see the detailed information about CSAB counselling : https://engineering.careers360.com/articles/csab

Good Luck !!!!