Getting a scholarship is more difficult than admission into a university and so you have to stand out of the crowd, details about universities and how to proceed further are mentioned below,

1. Check US News, (Edulix)

2. Go through the eligibility and prerequisites of those universities

3. Find out those Universities which match your profile and interests.

4. Try to apply in the early bird application of universities. (Sometimes applying earlier can enhance your chances to get a scholarship) .

5.Go to the "Financial Aid" section of universities website to know about scholarships.

But a high GRE score may not guarantee you a scholarship but a low GRE will reduce your chances to get one.