If, for some reason, you were thinking of camping outside a store or waltzing into one November 12th to grab a PS5 in person don’t bother. Sony has confirmed that no units were made available as in-store purchases anywhere.
The only way to get a PS5 at launch is by purchasing one online, and all stock everywhere has been sold-out.
If pre-ordered from somewhere and chose in-store pickup, you will of course be able to do that.
It is possible and likely that more units will become available to order online after launch, before Christmas.
Source: PlayStation Blog