[ANSWERED] How to do random coins between 1 and 100 why doesn't it work?

Well to start, we must remember that we're doing this on the SERVER only, as we want to edit the player's coins. I'll use remote events to tell the server when to give players coins.

-- Button Script
local button = script.Parent
local remote = game.ReplicatedStorage:WaitForChild('CoinRemote') -- Wait for the remote to be makde

button.MouseButton1Down:Connect(function()
    remote:FireServer() -- Tell the server to give us random amounts of coins
end)

-- Server Script

-- Create a new remote event for the button
local remote = Instance.new('RemoteEvent')
remote.Name = 'CoinRemote'
remote.Parent = game.ReplicatedStorage

-- Create an event for the remote event
remote.OnServerEvent:Connect(function(player) -- client telling us to activate
    local leaderstats = player:FindFirstChild('leaderstats') -- check if the player has the leaderstats
    if leaderstats then
        local coins = leaderstats['Coins'] -- get their coins
        coins.Value = coins.Value + math.random(1, 100) -- add randonmly 1-100 coins
    end
end)

You must put the random variable inside the function. If you keep it outside, it will give a random number at the beginning but it won't change.

EDITED : If i've correctly understood what you wanted, maybe this will work like this :

math.randomseed(tick())
function OnClick(Plr)
local random = math.random(1,100) -- here, so it creates a new random number each time you press the button
local Stats = Plr:WaitForChild("Stats").Coins
Stats.Value = Stats.Value + random
script.Disabled = true -- remove this line if you want players to be able to use it many times
end

So, tell me if there's still a mistake, if this is not what you wanted : this actual script will, when pressing the button, create a random number between 1 and 100. It will then add the random number stored in the 'random' variable to the value of Coins, located in Plr.Stats. Finally, it will disable the script so players can only press it once

All you need to do now is to link the script to the button you want to activate the script

script.Parent.MouseButton1Click:Connect(function(Plr)
local r = math.random(1, 100)
plr:WaitForChild("Stats"):WaitForChild("Coins").Value = plr:WaitForChild("Stats"):WaitForChild("Coins").Value + r
end)

That should be it...

Made some edits