I completed my MSc Biotechnology in India. Can I get job with this qualification?

Can I do my MS in USA for better career openings.

Now I am staying with H4 visa in USA.

If can I pursue my MS in USA how many years it will take to complete it.

After my MS can i get better jobs.

Can I get Scholarship funding for my studies.

Well, doing MS will NOT gurantee you any better jobs. Most of the jobs in US do not require masters degree, unless they are research driven. Typically MS takes about 1.5 to 2 years. Read this MS in USA on H4 VIsa