How would I get walkspeed and the block disappears when I touch the generated brick?

So this is using a dropper I made.

The script is

local function made()
	local Part = Instance.new("Part")
	Part.Size = Vector3.new(1,1,1)
	Part.BottomSurface = 0
	Part.TopSurface = 0
	Part.Parent = script.Parent
	Part.Material = ("Neon")
	Part.Position = script.Parent.Position
	Part.BrickColor = BrickColor.new("Lime green")
	Part.CanCollide = true
	Part.Transparency = 0
	Part.Name = "Brick"
end

while wait(1) do
	made()
end

I want it so when you touch "Brick" you get walkspeed and it disappears

Simply make another function using the Part's Touched event:

brick.Touched:connect(function(hit) --change this directory according to the part
	local humanoid = hit.Parent:FindFirstChild("Humanoid") -- checks to see if a player touched it
	if humanoid then
		humanoid.Walkspeed = 16 -- change walkspeed
		brick:Destroy() -- or any other means of removing the brick
	end
end)

Hope that helped get you in the right direction.

Hi there! So to make this as simple as possible, So first were gonna use a different setup for a function, in the code i'll label everything that's happening as you read through!

local wSpeed = 18 --This changes the walkspeed to whatever you set it to!
local enabled = true

script.Parent.Touched:connect(function(hit)

if hit.Parent:FindFirstChild("Humanoid") and enabled == true then -- Checking if humanoid & enabled are true

hit.Parent.Humanoid.WalkSpeed = wSpeed -- Sets the walkspeed
enabled = false	
script.Parent.Transparency = 1 -- These 3 lines of code can be changed to a "For" loop to make the transition look nicer
wait(3)
script.Parent.Transparency = 0
enabled = true -- Simple debounce
end

end)

The only difference with this script is that your not creating a new part, You can always look into math.random to spawn the "powerup" where ever on your map! Hope this helped you!