How many is 'six score' or a 'long hundred'?

I did not know that, but I am glad that I was able to learn a vital piece of information. Barbara

Lincoln in his famous speech used "4 scores and 7 years ago " meaning 87 years

all I could think of was 4 scores and 7 years ago

The old saying, that a person's lifetime was three score years and ten. Meaning 70 years on average.

I just did the "obvious deduction" on the wording.