Hii Saumya!
B.com and B.com Hons are similar but the only difference is the depth of the subjects taught in these two courses. B.com (P) is the overview of subjects such as economics, accountancy etc., But in B.com Hons, you are taught in depth, the subjects like corporate laws, corporate accounting, e-commerce, computer applications, management etc., These subjects are not taught in b.com (P).
You can specialise in a subject in B.com Hons.
So, if you want to study the depth of the subject, go for b.com Hons.
Hope this helps.
Good luck!