If you meant (PS2 emulator), here's the safe, official way to get it:
The malicious actors behind the "PCSX5 download" keyword use an elaborate setup to deceive unsuspecting users. pcsx5 download
Emulating a console as complex as the PlayStation 5 takes years of work. The PS5 utilizes a custom x86-64 AMD Ryzen CPU and a custom RDNA 2 GPU. While the architecture is similar to PCs, the proprietary nature of the PS5’s operating system and security features makes emulation incredibly difficult. If you meant (PS2 emulator), here's the safe,
Before you can start playing PS2 games on your computer, you'll need to download and install PCSX5. Here's a step-by-step guide: If you meant (PS2 emulator)