This should work!
Just change the first line to where your RedMounds folder is! (I assumed it is in Workspace)
local RedMoundsFolder = workspace.RedMounds
for _,Mound in pairs (RedMoundsFolder:GetChildren()) do
if Mound:FindFirstChild("ClickDetector") then
Mound.ClickDetector.MouseClick:Connect(function()
Mound:Destroy()
end)
else
print "A mound does not have a ClickDetector!"
end
end