Code: (LocalScript)
local MainFrame = script.Parent.Main
local FindPlayerFrame = MainFrame.FindPlr
local PlrBox = FindPlayerFrame.PlrBox.Box
local FindBTN = FindPlayerFrame.Find
local SS = game:GetService("ServerStorage")
local NameBox = MainFrame.PlayerName
local ClassBox = MainFrame.Class
local BreakfastBox = MainFrame.Breakfast
local LunchBox = MainFrame.Lunch
local DinnerBox = MainFrame.Dinner
local DrinkBox = MainFrame.Drink
FindBTN.MouseButton1Click:connect(function()
if SS:FindFirstChild(PlrBox.Text) then
NameBox.Text = ("Name: " ..SS:FindFirstChild(PlrBox.Text).PlrName.Value)
ClassBox.Text = ("Class: " ..SS:FindFirstChild(PlrBox.Text).Class.Value)
BreakfastBox.Text = ("Breakfast: " ..SS:FindFirstChild(PlrBox.Text).Breakfast.Value)
LunchBox.Text = ("Lunch: " ..SS:FindFirstChild(PlrBox.Text).Lunch.Value)
DinnerBox.Text = ("Dinner: " ..SS:FindFirstChild(PlrBox.Text).Dinner.Value)
DrinkBox.Text = ("Drink: " ..SS:FindFirstChild(PlrBox.Text).Drink.Value)
end
end)
I don't know my mistake and I checked Dev Console. I not found mistakes in Client Log and Server Log
I'm checked for folder and folder is exist. In Studio it work.

2 comments
Studio turns every script and local script secretly into a Module script, which is both Local and Server mixed. If it only works on Studio, try making it a server script.
I'm needed to use RemoteEvents or RemoteFunctions?