If you search for "Nintendo Switch Need for Speed Underground," you will find a definitive, disappointing answer: It does not exist. Neither Need for Speed: Underground (2003) nor its acclaimed sequel Underground 2 (2004) has ever been officially released on the Nintendo Switch.
❌ Does not exist. Nostalgia factor: 10/10. Likelihood of official release: 1/10 (unless EA greenlights a full remake).