Maybe you want to delete Skype for a good reason. Perhaps something went wrong with the macOS update and you need to completely uninstall your current Skype before reinstalling the latest version. This might be due to the associated files and folders of the older version interfering with your downloads.
Are you having problems using Skype on your Mac? Maybe it’s conflicting with another app, or it shows the ‘quit unexpectedly’ error when you launch it?