20 is the number associated with a 'score.'
A score = 20. It is a number, just a number. There are no years in a number.
20 in a score
A score as a number is 20
In a sorted list of number, the median score in math is the number in the middle of the list.
A GRE raw Score is the number of questions you answered correctly.
A score, when referring to a number is 20, so four score is 20 x 4 = 80
Four score is a number. A score is twenty, as a dozen is twelve. Four score is 80.