here

game.Players.PlayerAdded:connect(function(player)
player.CharacterAdded:connect(function(char)
	if game:GetService("MarketplaceService"):PlayerOwnsAsset(player, gamepassid) then
		game.ServerStorage.TOOLNAME:Clone().Parent = player.Backpack
	end
	end)
end)

-- replace gamepassid with your gamepass id
-- replace toolname with the tool's name. put it in serverstorage.
-- put this in a regular script in ServerScriptService