B.Arch

Please visit on this site first
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwinlfe5qLPhAhUJpY8KHf_xCRIQFjAAegQIAhAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H.

JEE Main paper 1 is GATE for JEE Advanced through which you can go to IITs, and mains score is only for entry in NITs, GFTIs, and other institutes. So, you have to crack JEE Advanced with a superb rank to get into IIT, Kharagpur.

As an B.Arch graduate, you may expect somewhere around INR. 50,000 per annum.

For Bachelor in Architecture, top entrance exams is given below:
NATA
JEE Main and Advanced
AMU Arch
KIITEE
IPUCET
COMEDK UGET
KCET
UPSEE
TANCET.

You can check the list of all the possible colleges, which you could get over this rank:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

According to your JEE percentile, chances are there for you to get admission in JJ School of Architecture.

Yes, there are some chances to get admission here. So, you can apply for admission. Good luck.

Yes, this is a course under B.Arch.
Good luck.

We cannot predict cutoffs, but we can estimate the expected cutoffs.
L.S Raheja School of Architecture grants admission through MASA-CAP. MASA publishes its Merit ranking based on an aggregate of your NATA score and Boards result.
The Aggregate is calculated by considering 50% marks of NATA score + Boards percentile.
LSR comes under the first batch of preferences for Students so the merit rank needs to be fewer than 100120. In successive rounds seats do get available as students opt out for JJ and Rachana AOA. So, the brackets increase to 150175.
To gain a Merit rank under 200 you need an Aggregate score of 145+.