Well, you can get a reference to ServerStorage by…
local serverStorage = game:GetService(“ServerStorage”)
then once you have that, you can use the reference to look for things inside ServerStorage, such as if you have a map, named “Map1” you would do…
local map = serverStorage:FindFirstChild(“Map1”)
or
local map = game:GetService(“ServerStorage”):FindFirstChild(“Map1”)
This will of course need to be done in Server scripts, not a LocalScript.