"Vintage" when used alone, outside of the wine industry, is a nebulous term, and should be avoided.
It is supposed to be attached to something that specifies its meaning, usually an exact year, or a time period.
There are two main ways to use it "properly."
In the first, it can be thought of as meaning, "Made in the year..." A vintage 1980 P Bass, for example.
In the second, it can be thought of as meaning, "...year of manufacture." A 1980 vintage P Bass, for example.
The way it is used by most people nowadays is a perversion of the language, that has removed any solid meaning from the term. Therefore, it's practically useless.
It was originally used (and still is) in reference to a manner of wine making, in which all of the grapes used to make the wine were harvested in a single year – as opposed to a non-vintage wine, which is a blend of various vintages.
In no proper usage is there ever a certain age attached to it. You can have a brand new P Bass, made this year, and if you are using the word properly, call it a 2022 vintage P Bass.