Hello

I am extremely sorry to tell you dear but if you are from commerce stream then you are not eligible for doing B.arch

This is because

To be eligible for doing B. Arch you should  have done your 12th from science stream with physics chemistry and mathematics

For example, to be eligible  for JEE mains 2020 for B. Arch one must be either appearing for 12th board exam in 2020 or should have passed it in 2029 or 2018 with Physics,  mathematics and chemistry

Thank you