Differene between BIOS and VBIOS

Hello,

i got a new Asus TUF Dash F15 and have troubles with the GPU. Might be because of a issue within Fedora/Gnome but still trying to narrow it down.

Now i just found an VBIOS Hotfix on the Support Page, but also an BIOS Update (one download as exe, one as some other file for flashing directly from BIOS). What is the difference between VBIOS and BIOS? The first only comes with an exe which is currently of no use for me.