TOEFL Scores

A GRE score above 315 should be targeted and a TOEFL of 90 to 100. It is better you check some university websites for the admission requirements, you will be able to prepare in a better way if you have a target and goal in mind. Different universities have different criteria.

Scholarships are based on merit, they are given by the universities (you are applying to) to deserving students. Generally applicants are considered by default and the most meritorious ones are considered. Very good academic grades, a good GRE score, above 310, TOEFL score above 100, extracurricular activities, SOP, recommendation letters etc. Are evaluated.

the gmat cutoff was 600 and apart from that TOEFL is not necessary but a good score in that is a usual bonus and an upper hand over the matters.

Pass score depends on the college you apply for. Generally, 310+ out of 340 is considered a good score in GRE. In TOEFL, 80+ out of 120 is the minimum eligibility criteria of English proficiency. In GRE. The verbal section is very hard, so you need to prepare well for that. TOEFL is easy, just a month preparation is enough to score well.