Gui text script fails to show 500 minus the number of deaths the player has?

Do something around the lines of

game.StarterGui.ScreenGui.TextLabel.Text = 500 -  player.leaderstats.Deaths

and if the script is in the textlable do

 script.Parent.Text = 500 -  player.leaderstats.Deaths

What you’re doing is concatenation- that is to combine a string and a variable. What you’re looking for is subtraction, a mathematical operation that takes the difference of two numbers. Instead of ”500 -“.. player.leaderstats.Death, it should be “”..500-player.leaderstats.Death

Hope I could help!

Problem

You have to access a specific player's PlayerGui. You gotta think of StarterGui like a container. When a Player joins the server, it will replicate its contents to the PlayerGui of a Player.

DataModel > Players > [player.Name] > PlayerGui

Note that changing the properties of an instance in the StarterGui does absolutely nothing.

Fixed LocalScript

wait(5)
local Players = game:GetService("Players")

local player = Players.LocalPlayer
local playerGui = player.PlayerGui

local result = 500 - player.leaderstats.Deaths

playerGui.ScreenGui.TextLabel.Text = tostring(result)

Explanation

I added a wait(5) because the LocalScript ran faster than the leaderstats were loaded. (wait(n) before the code is ran should be okay.)

First, I retrieved the Players service. Always use the GetService method even if you can define the service from the DataModel. So if you change the name of the service, there'll be no errors.

Next, got the client and defined the PlayerGui.

After that, created a variable for the result because if I did what you did, it'll probably not even subtract 500 by the Deaths amount.

Finally, I set the text for the TextLabel. You probably don't need to tostring it, but I feel like you have to.