db is declared in the function.

That means it will always start off as false each time the part is touched. You meant to declare it outside the function.

plr is a misleading identifier, hit.Parent will never be a player, the most it will be is a player's character.

local Players = game:GetService("Players");
local Workspace = game:GetService("Workspace");
local debounce = false;

script.Parent.Touched:Connect(function(part)
	if (debounce) then
		--// return out the function if cant touch
		return;
	end
	
	local client = Players:GetPlayerFromCharacter(part.Parent);
	--// using the humanoid to check if player is unreliable, anything can have a humanoid
	
	if (client) then
		debounce = true;
		local character = client.Character;
		character.Archivable = true;
		character:Clone().Parent = Workspace;
		wait(7);
		debounce = false;
	end
end);