how to find a player from a string value?

ok so im a beginner scripter and im trying to make a single player tycoon. right now im trying to make a script that adds cash directly from ore to player . i was brainstorming all day how to make it work.

local furnace = script.Parent
wait(1)
local plrname = game.Workspace.PlayerName.Value
furnace.Touched:Connect(function(hit)
	if hit.Cash ~= nil then
		local player = game.Players.plrname
		multiplier = script.Parent.Parent.Multiplier.Value
		wait(0.1)
		hit.BrickColor = BrickColor.new("Dark stone grey")
		wait(0.1)
		hit.BrickColor = BrickColor.new("Really black")
		wait(0.1)
		player.leaderstats.Cash.Value = player.leaderstats.Cash.Value + hit.Cash.Value * multiplier
		hit:Destroy()
	end
end)

plrname is the stringvalue which shows player name

error im getting: 11:07:12.722 - plrname is not a valid member of Players

does anyone know how to fix it?

Simple fix.

game.Workspace.PlayerName.Value is what is breaking your script. You want to change it to

local plrname = game.Players.LocalPlayer.Name

This is because the "players" group is outside of "workspace".

Heres a tip im not guranteed itll work but based on what u described all u really need to know is the owner of the tycoon right? so first u should make the tycoon door owner and when a player touches it do this script like the touch to be owner doors they usually make

script.Parent.Touched:connect(function(part)
local player = Part.parent.parent

-- this will tell the game the players name wont work if the character has a hat or accesory if he does u can do
-- these 3 lines the local player and if not is optional u can either use the one above or this if players have hats or accesorys i recommend the one above as this may not work
local player = part.parent.parent
if not player then
local player = part.parent.parent.parent
script.Parent.Transparency = 0.5
script.Parent.CanCollide = false
-- then for the other script u will do this like when the ore touches the pad btw put this all in a single script
end
end)
game.workspace.(OreName).Touched:connect(function(part)
if part = game.workspace.(CashPadName) then
local multiplier = script.Parent.Parent.Multiplier.Value
wait (0.1)
hit.Brickcolor = Brickcolor.new("Dark stone grey")
wait (0.1)
hit.Brickcolor = Brickcolor.new("Really Black")
player.leaderstats.Cash.Value = player.leaderstats.Cash.Value + part.Cash.Value * multiplier
part:Destroy()
end
end)
-- this should be local script btw and  also change the orename and cashpadname into the thing and put the script in the area i hope this helped