In other words, how many pixels per inch depends on the size and resolution of the screen you're talking about, so we'll have to do some math to get the number you're after for yours. Related ...

A measure of the accuracy or detail of a graphic display, expressed as dots per inch, pixels per line, lines per millimeter, etc. It is a measure of how fine an image is, usually expressed in dots ...

The renders show the Pixel 10, Pixel 10 Pro and Pixel 10 Pro XL - there are no images for the next Pixel Fold just yet. Here ...