How do I give gamepass items to players?

If I wanted to give a different item to players that own a gamepass, would this work?

local penguinShooter = game.ServerStorage["Penguin Shooter"];

if game:GetService("MarketplaceService"):PlayerOwnsAsset(plr,751736364) then
	while true do 
		wait(27)
		for _,v in next,game.Players:GetPlayers() do
			if not v.Backpack:FindFirstChild(penguinShooter.Name) then
				sword:Clone().Parent = v.Backpack;
			end
		end
		wait(58) 
	end
else
	print("they don't own the gamepass")
end

This is probably wrong but I'm still learning..