.. . .winston wrote in news
In the meantime, I suspect, you were being asked if you have the Windows 7
Product key.
- it should be on a sticker on the machine or included with the material
received when the product was transferred to you.

Thank you for asking clarifying questions because when I bought this
desktop, I was just told it worked, and when it booted up before I bought
it, the only thing I knew to ask was what the password was of the user (she
gave it to me, and I bought it as soon as I was able to log in).

Here is the sticker on the outside of the case which says it's for
"Windows 7 Home Prem OA" with a bunch of numbers on it.
https://s15.postimg.org/8k2gatca3/win7_sticker.jpg

Are any of those numbers supposed to be meaningful to me at this point?