■ Put 'Skript.jar' and 'Repuska.jar' to "plugins/"
■ Start server then you'll see error from Repuska about license.
■ Go into "plugins/Repuska/config.yml"
■ And put your license key which is you get from the developer to "Licence_Key <---" selection.
■ Put '.sk(s)' to "plugins/Skript/scripts"