Unfortunately, Grand Theft Auto V is not available on the PlayStation Vita. It was released for the Xbox 360, PlayStation 3, Xbox One, PlayStation 4, and PC. It was not designed for the PlayStation Vita's hardware, and therefore cannot be played on it.
The Sony Playstation Vita still has a nice design and can provide a good gaming experience, despite being a device from ten years ago. The console's ergonomics and size provide a comfortable gaming experience, even during long hours of play.