Depends on your budget and how well the floor looks now. Is it in good condition? One single sheet or squares? Some might tell you to stencil or paint, then apply a polycrylic over to seal it. What room is the vinyl in? Most people upgrade to laminate wood..which you can put right over the vinyl.
Be careful if you choose to put another floor over the vinyl - you will have an odd transition between rooms - it will make it a fall risk.
Add an area rug.
reinstall a new floor
You can paint it.
Here's how I painted ours: https://thehoneycombhome.com/how-to-paint-linoleum-flooring/