Can someone tell me whats wrong? It wont spawn the venomshank in my backpack.

kills = game.Workspace.LeaderboardV3.leaderstats.KOs

script.Parent.ClickDetector.MouseClick:connect(function(Buy)
	if kills >= 0 then
		for i,v in pairs(game.Players:GetChildren()) do
			if v.Backpack ~= nil then
				clone2 = game.Lighting.Venomshank:Clone()
				clone2.Parent = v.Backpack				
			end
		end
	end
end)

This is what you did wrong: in the first line you defined kills as the leaderstat in the player. So you are basically saying that if the leaderstat kills = 0 then you get it. You get the sword. You want to define the value. So then you will be saying if the player has 0 kills then buy the sword.

kills = game.Workspace.LeaderboardV3.leaderstats.KOs.Value

So this would be the script:

kills = game.Workspace.LeaderboardV3.leaderstats.KOs.Value

script.Parent.ClickDetector.MouseClick:connect(function(Buy)
    if kills >= 0 then
        for i,v in pairs(game.Players:GetChildren()) do
            if v.Backpack ~= nil then
                clone2 = game.Lighting.Venomshank:Clone()
                clone2.Parent = v.Backpack              
            end
        end
    end
end)