Really depends on the kid and their level of understanding. The most important thing in my experience as a dad? Whether the child
cares to pay attention to something. Something playing in the background while they are playing with toys will likely not be learned or absorbed unless it's so repetitively played that you as a parent will go mad.
On the other hand, whatever your kids soak up they tend to REALLY soak up. My son loves space so much he has memorized various exoplanet names and can endlessly discuss space in general. Space was one of the many things we exposed him to through various media and its what he was drawn to. Our goal was to try to expose him to as many things as we could to allow him to find what he was drawn to - music, art, space, trucks, you name it.
So don't stress too much about whether your daughter is picking things up or not, or if she can't recount things to you. Anytime you introduce her to something new, it expands her experiences and helps make new neural connections - even if the connection is something simple like "that object is red like the other object!"