B.Sc is a Bachelors in Sciences of various subjects like Biology, Physics, Chemistry, Life Sciences, Bio Technoloogy, Micro Biology, etc. So the scope depends on the subjects you want to study in B.Sc.  It is a 3 year programme. And then there is B.Sc Nursing which is a 4 year programme. Now there are many subjects that you do your B.Sc in. Few of them are Anaesthesia, Laboratory Technology, Astrophysics, Agriculture, Fisheries, Statistics, Acturial sciences, and lot many.