If you see this filename on a ROM site, . I strongly advise against downloading BIOS files from unofficial sources — not only is it illegal, but they may be corrupted, infected with malware, or modified.
Sony has not released any official BIOS files for emulation, nor are they likely to. The company occasionally repurposes PS2 tech in PS Plus Premium’s cloud streaming, but that offers no downloadable BIOS. scph70004biosv12eur200bin link