how to use getchildren to destroy parts?

while true do
local Doors = workspace:GetChildren()
for i = 1, #Doors do
if Doors.Name == "Door" then
Doors:Destroy()
wait(0.3)
end
wait(500)
end
end

I was testing ways to destroy stuff in workspace but it wont destroy my item

What you're doing wrong is, you're just checking if the Children table's name is 'Door'

here's how you correctly do it :

if doors[i].Name == 'Door' then
doors[i]:Destroy()
end

You can't destroy a table. Doors is a table of parts, you need to call :Destroy() on each door.

while true do
	local Doors = workspace:GetChildren()
	for i = 1, #Doors do
		local door = Doors[i]
		if door.Name == "Door" then
			door:Destroy()
			wait(0.3)
		end
		wait(500)
	end
end