Question

what is the value of score in math​

Answer 1

A 'score' is a group of 20 (often used in combination with a cardinal number, i.e. fourscore to mean 80), but also often used as an indefinite number (e.g. the newspaper headline "Scores of Typhoon Survivors Flown to Manila").

Answer 2

A group of 20 units are referred as score.