You can use your vegan wonton & dumpling wrappers right away, stack them and put them in an airtight container in the fridge for a couple of days, or put that airtight container in the freezer for later.
I tried to collect up the scrap dough and re-roll it, but I found this didn’t really work, so I decided to donate the scrap dough to the green bin gods. If you are worried about a little waste, then use the knife method to cut the wontons into squares for the least amount of scraps.