I don't usually tap on the clutch cover, but unless you are having a mechanical problem --- like a noisy hinge when you open or close the lid, or that cover interferes somehow with the operation of your hinge, or if the cover appears to you to be incorrectly installed --- not seated completely, then there's not much you can do, except try to ignore the fact that it makes an odd noise when you tap that cover. (Don't tap the cover!)
It doesn't likely hurt anything, except that it annoys you
thank u so much manAh, seems like you would have a reason to return, if that sound annoys you enough
But then, you can return for no reason at all, if you simply don't like it.
But, to answer your main question, the sound is a normal-enough kind of a sound --- but shouldn't be any sound at all at that location, like the other areas on that hinge cover.
And, not something that most folks would ever notice --- and not likely affecting anything.
So, your response now is up to you. If you don't like the sound, return your MBPro.