It does not exist in a functional form. If you see YouTube videos claiming otherwise, they are either:

To understand why a PS2 emulator VPK does not exist, you have to look at the massive gap in hardware architecture between the two consoles. Emulation requires the host system (the Vita) to be significantly more powerful than the target system (the PS2) because it has to translate code in real-time. 1. Architectural Differences

: Developing an emulator requires massive resources and time; most Vita homebrew developers focus on porting existing code rather than building a ground-up PS2 emulator [5.4, 5.7]. For a complete list of what be played, users often refer to resources like the Wololo Emulator List VitaDB Downloader for available homebrew [5.13, 5.3].

The Vita is roughly as powerful as a high-end smartphone from 2012. Smartphones from 2012 could not run PS2 emulators, and neither can the Vita.

Non-functional files that may require a factory reset of your PS Vita's memory card. Authentic Alternatives

The PlayStation Vita (PS Vita) is a powerful handheld console that, despite its relatively short lifespan, has left a lasting impact on gamers. One of the most exciting aspects of the PS Vita is its ability to emulate other consoles, including the PlayStation 2 (PS2). With the help of a PS2 emulator and VPK files, PS Vita owners can play a wide range of PS2 games on their device.