Hello there,
You can write examinations related to B arch such as jee main paper 2. You can entrance exams for colleges to get admission in B. Arch colleges. There are various ways to get architectural courses. You can get colleges through other state competitive exams such as cet, comedk and others. You can also get through management or vacany quota.

Dear Aspirant,
Please clarify your question more.
So that I will help you in a better way
Thankyou