Maximum brightness will be mag 2, and that will only be for about half a day. If you are on the wrong side of earth, you’ll miss the brightest period. It might remain visible to the naked eye for a few days depending on how dark your skies are, but it won’t be anything visually impressive.
Depends how you look at it.
The star will become visible to the unaided eye for the first time in a lifetime. After possibly just a few days of visibility and increased brightness, for millions the star will once again go dark and not be visible again for the rest of their lifetimes.
I’m waiting for Bettleguese, it’s been off gassing for years.
They say when it pops off it will be seen for months.