Open Finder and go to the Applications folder in the sidebar.
Drag the Windscribe app to the Trash folder on Dock, or select the app and choose File > Move to Trash. You can also right-click the app and select Move to Trash.
Once the app has been moved to the trash, to completely delete the app, choose Finder > Empty Trash. You can also reboot your system at this point to clear out any potential temporary files.