Finder.app won't open after I edited Info.plist
I would boot to internet recovery or another OS and reinstall finder by reinstalling the OS. That leaves all your apps and files intact and fixes whatever problems finder had. 

I have fast network, usually have both the internet recovery image and the OS cached on my Mac mini that runs caching server (or Mojave cache service), so the operation takes 5 minutes instead of 25 that is typical on fast networks.