(1) Pretty sure it's version 7.0. (2) Host is Fedora Linux 36. Guest is Windows 98 SE. (3) I just did a regular install of an iso on virtualbox so I'm pretty sure I didn't do any extensions. (4) I'm not sure if my BIOS has hardware virtualization. If it helps I have an (intel) T480 lenovo laptop and I haven't changed anything in the bios other than adding fedora linux.

If I have to use a usb drive, how do I get it to read those?

Edit: Okay I kind of figured it out. I'm just right-clicking the tiny disk icon south of the guest os then pressing "choose a disk file." I then go into my files and select an iso for the game I want to play. I then click on "my computer" in the top left corner and in it there should be an icon to start setting up the game.