You can no longer create a new PSN account directly from the Vita hardware.
PS Vita system software was released on May 10, 2022 . This mandatory update primarily focuses on account security and phasing out legacy management features on the hardware itself . 🛡️ Key Changes in Version 3.74 ps vita system software update 374 updated
: The update is stable and does not negatively impact gaming performance or existing libraries. You can no longer create a new PSN