If I recall correctly I had to wait a good 90 seconds for anything to pop up after grub when I've installed nobara.
Have you tried waiting a good minute or two?
I'm kinda meh on nobara, the install is cool, performance is great but I've had some weird problems I never had on xubuntu. ๐คทโโ๏ธ
That's how we know you're a real electrician lol.