B.Arch

There are 20 seats in AMU for B.Arch.

You can get those colleges in the next round of counselling, and so don't worry about that, this is the only thing that only the authorities have control in it.

No, Galgotias University is a deemed university and it is not under the UPTU, Galagotias College is under the UPTU.

B.Arch is any day a better course. An architect can also be an interior designer, but an interior designer can never be an architect. An architecture student passing out from any college has following opportunities. Entrepreneurs
Furniture design
Photography
Construction & Community-based volunteering
Infrastructure development
Graphic design
Set Design
Jewelry design
Advance research in Architecture
Faculty at School of Architecture
History, Restoration and Preservation
Interior design.

It depends on your interest. Interior designing is more into creativity, wall color and furniture design for the room, but B.Arch is more into the map of an area and its structure.

Sure, you can. Visit this link to check B.Arch colleges based upon your rank:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=6919840
Then visit this link for various colleges which will provide you the brochure:
https://www.shiksha.com/architecture-planning/colleges/b-arch-colleges-india

You can check on www.pdfdrive.com. It has a huge number of pdf books free to download. It is secure too.

Hello
Here I mention a site for you please visit on this site
Hope this will help you
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/upsee-college-predictor&ved=2ahUKEwjsu72NqojdAhUIPo8KHV1-B64QFjAAegQIABAB&usg=AOvVaw35nIYCmB-o81pLl73rIIvk.

Hello,
Here, I will mention a website for you. I hope this will help you:
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/kcet-college-predictor&ved=2ahUKEwjmp_jJi_7cAhVIp48KHaB5DNkQFjAAegQIBhAB&usg=AOvVaw1bvMJ_hq7ob55SSerZjsMI

IELTS and TOEFL are the compulsory exams for English proficiency outside India. And, it just depends on your board marks.