I usually chop them up (the top bulbs and the more tender stems) and use them anywhere I want some garlic/chive-like flavor.
https://www.allrecipes.com/article/what-are-garlic-scapes/
And, since I’m on a Pesto Kick, you can use them to make Pesto, too!
https://www.allrecipes.com/recipe/199868/garlic-scape-pesto/
Does pesto freeze well?