That does not look good. It looks to be the very top of the head tube that is unsupported by the headset race on the inside.
Things to try:
Give the area a good hard squeeze with your hand. No head tube should flex at all with mere hand pressure. If you can feel it deforming, immediately stop riding this frame.
Try getting the bike's rider to sit on the ...
That is bad news. It's too clean looking and parallel to the headtube top face to be at all likely to be a random scratch. It looks like a defect with the headtube. Even if it were a scratch, it would be a deep one in one of the more highly stressed areas of the bike. It looks like something that should be resolved either via warranty or carbon repair.