How to Use a Boot Disk USB for Mac Silicon if the client deleted their Macintosh HD Drive already?

The Only thing that comes up when I boot up the MacBook is the Options setting when trying to do disk recovery, and from there it won't do anything further, and the wheel keeps on a'spinnin. Now I have downloaded the igeekboy software for data recovery due in part to my client wanting to save her files, pictures and what may have you. I told her IF I can I will but I'm mainly worried about adding the OS back to the damn computer. When I boot the drive doesn't show up as a os and I cannot open disk utilities, or terminal. So how the heck do I get it to work? Ive managed to get to the part where

Question by Christopher Hastings on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.