PS4 Emulator do they exist?
A PS4 Emulator is a piece of hardware or software that enables a PC to act like a PS4. And Typically the aim of the emulator is to run the PS4 software on a PC. However, they DO NOT EXIST and probably never will. With the way the architecture is designed inside a PS4, a computer would never be able to replicate the capabilities of the PS4.
Firstly, a team would have to reverse engineer the PS4. The only console currently being reversed engineered at the moment is the Nintendo Switch. Although this is still at a very early stage. Even the PS3 is nowhere near close to being emulated, so do not fall for any trolls claiming they have a working emulator anytime soon.
Most people claiming that they have a PS4 Emulator are scamming and implement malware inside the software.