yes with skript-mirror, you can take static variables, not sure about others, but why you need that? using the API may be all you need
i have a hub servere and i nead to find a way to see if the server is online or offline and see how many there are inside the servers
absolutely use skript-mirror for that. that allows you to do anything it will be hard at first (if you dont know any java), but then there is a steep learning curve and suddendly you have more tools in your hands than you would know how to use