How do I make a brick detect when it touches another brick with a certain name?

Do I make it check its children or its name?

You would need to use the touched function

It would work like this

script.Parent.Touched:connect(function(hit) --Activates when hit
  if hit.Name == "the name" then --detects the name and runs the code
  --code here
 end
end)

Insert a script into the brick and type the following code into that script.

script.Parent.Touched:Connect(function(Object)
	if Object:IsA('BasePart') then
		if Object.Name == "PART NAME HERE" then
			print(Object.Name .. ' has touched ' .. script.Parent.Name .. '.')
			-- This is where you would add the rest of your code. --
		end
	end
end)