To take admission in MS in U.S.A here are few fixed rules like
You must have 16 years of education i.e. 10+2 with
A four years of degree
Or
three years of degree + diploma
Or
Post graduation
Certificate of Academic record of SSC, HSC and graduation or post graduation or diploma etc.
But most of the Universities do not have any fixed academic percentage rather it varies every year depending on the percentage scored by the top rank holder. All the Universities have a Test of English as a Foreign Language score, shortly IELTS /TOEFL Score which is considered during admission.
Advantages of a degree from a reputed foreign university below point-wise:
Whole world knows about a reputed foreign university.
After completion of your degree, you can take appointment wherever in the world.
They offer confirm placements.
Many of them give a fair chance to take paid academic appointment for teaching or research on part time or full time basis.
Hope you are able to find your reply positively here and I suggest you to go ahead to study abroad
Best of luck.