If you bought it directly from Google Nest, I would think you could contact Google Nest Support for a replacement, starting with this link: https://support.google.com/googlenest/gethelp
If you bought it from a retailer, you should be able to exchange the non-working Nest Hub for a replacement.
That's the problem with Google products. It would never be a case if it was made by Apple - no matter where you buy / second hand or not as long as it is under warranty you can get it fixed without any receipt.
My Nest Hub waited a month to be open and receipt is missing.