The screen does not turn on after replacing the screen.

Unfortunately, I've had far too many opportunities to post my opinion regarding the quality of Google's repair parts, and your post only adds to that.

In my time here on iFixit, I've noticed a disturbing trend of people reporting that brand new replacement parts for Pixel phones turn out to be defective or nonfunctional. Having a Pixel 6 Pro myself, I tend to notice posts regarding them, and there are simply far too many to be ignored.

My conclusion is that Google has quality control issues with their replacement parts, so the new screen you got should be considered suspect. I would suggest you test this theory by opening it back up and plugging in the original screen. If it functions at least as well as it did prior to the replacement, then the new one is probably defective and should be returned for replacement under warranty.

iFixit sells genuine Google screens, and they all come with a lifetime warranty, so I have little doubt the iFixit Store personnel will be able to help you out with this situation. Contact them at support@ifixit.com and explain the situation and they will work with you to make it right. My own experience with them has been nothing but exemplary so I expect yours will be as well.