How could I run gVim on a USB drive (I can't install software on the computer) preferably I'd like to load it on the USB drive with a mac (so I can't install an exe - but I could use a pc) and also how could I load my
.vimrc file on drive and gVim use it?
It's unclear what OS this is for. If it's for Windows you should be able to copy the entire install directory from a machine you can install to—or from a machine that already has it installed—onto the USB drive and run it from there. Vim will look for a vimrc file in the same directory as the Vim executable.