https://wccftech.com/first-cyberpunk-2077-mod-extends-field-of-view-slider-on-pc/

The first Cyberpunk 2077 mod is available on PC, uploaded by 'Jade - LordEmil1' on NexusMods. It's an extended Field of View slider, which improves the range from the existing 70 to 100 FoV to the much larger 30-150 one.

To be honest, the game's default Field of View slider should be more than enough in most cases. We wouldn't recommend playing the game anywhere near 30 or 150 Field of View. Here's how it looks, in case you're wondering...