Installing Batocera

I've tinkered with Linux installations before but the last time I made changes to a BIOS it looked 8-bit, not like a windows program (I use Macs, for reference).

I have a Dell Inspiron 5502 (2021) that I just want to remove Windows from and install Batocera for gaming, but I can't figure out how to wipe it.

I'm running Batocera from USB but when I go to "Install on a new disk" there are no targets available. Anyone have any ideas? Thanks!