Provenance
Where it comes from.
'Green' is Old English grene, tied from the start to growing things and living plants; only in recent decades did it become the standard shorthand for environmental care and sustainability.
'Score' has an older and stranger history. It comes from Old Norse skor, a notch or tally cut into a stick, and also the number twenty, the count a herder marked before starting again. From cutting marks to keep count grew the ideas of a running total, a debt, and finally a rating. GreenScoring joins the color of growth to the ancient act of keeping count.