I have the same problem, 2 cracks from the top of the screen which came after just 1 week of light/normal use, around june 2020. Microsoft support told me that it is not covered by the warrany, and I did not want to pay 700 dollars to repair a brand new product. It has stayed the same for around 1,5 years now, I'm just waiting for Microsoft to acknowledge the problem, and offer me compensation and free repair.
This is extremely bad customer support Microsoft! Get a grip!