Hi ​@?????_?????????1223, thanks for sharing the screenshot. I can see that the entire canvas is currently selected (the marquee is around all four edges).

In Photoshop 27.10, Fill & Expand appears through Generative Fill when you make a selection on the image. Please select a specific portion of the canvas first, then choose Generative Fill. You should see Fill & Expand there.

Your current selection is why the option isn’t appearing.

Best,
Anshul Saini