Graduate Record Examinations (GRE) is a standardized test that is an admissions requirement for most Graduate Schools in the United States.

The GRE is owned and administered by Educational Testing Service (ETS) who created it in 1949.

As you want here I am telling GRE scored between 130–170 is IDEAL Score to get admission in reputed universities and the average score falls somewhere around 150-152.:

GRE Profile:

Type Computer-based or paper-based standardized test.

Developer / administrator Educational Testing Service

Knowledge / skills tested Analytical writing, quantitative reasoning and verbal reasoning.

Purpose Admissions to masters and doctoral degree programs in various universities.

Year started 1949; 68 years ago

Duration About 3 hours and 45 minutes (includes 1-minute breaks after each section and a
10-minute break after third section).

Score / grade range Analytical writing: 0.0 to 6.0 (in 0.5 point increments),

Verbal reasoning: 130 to 170 (in 1 point increments),

Quantitative reasoning: 130 to 170 (in 1 point increments).

Score / grade validity 5 years

Offered

Computer-based test: Multiple times a year (depends on availability of the test center).

Paper-based test: Up to 3 times a year in October, November and February.

Restrictions on attempts

Computer-based test: Can be taken only once after 21 days from the day of exam in every year.
Maximum of 5 times a year. (Applies even if candidate cancels scores on a test taken previously.)

Paper-based test: Can be taken as often as it is offered.

Countries / regions

About 1,000 test centers in more than 160 countries.

(Paper-based test offered only in areas where computer-based testing is not available.)

Languages English

Annual number of test takers 584,677 (2016)

Prerequisites / eligibility criteria No official prerequisite. Intended for bachelor's degree
graduates and undergraduate students who are about to graduate. Fluency in English assumed.

Fee

US$ 205

(Limited offers of "Fee Reduction Program" for U.S. citizens or resident aliens who demonstrate
financial need, and for national programs in United States that work with underrepresented
groups.)

Scores / grades used by Most graduate schools in USA, and few in other countries.