hi,
what is the difference between these two master degrees? have both the same value or is it one higher than the other? please give your advise...

MSc is master of science and the LLM is master of laws and seem to refer to taught courses rather than masters by research (usually referred to a MPhil). I would suggest that as far as a degree in law (or law related subject) is concerned, some institutions will not give an LLM to a student who does not have an undergraduate degree in law and use the MA or MSc instead for the award of a masters degree in the field instead. As a corollary, it may be that a student in this situation has a more restricted choice of options, though again this will depend on the institution.