Is there any course to do alongwith B.Sc microbiology? If yes, how would it be beneficial after graduating?

I think you have to strictly focus on yours B.Sc Microbiology instead of looking for some short term useful courses. Because these courses can distract you from the original goal. B.Sc. Microbiology is a broad discipline that involves the study of the biology of bacteria, viruses, protozoa and fungi