ichwarsni01: So the question again: do i get a steam key when i buy untertale for steam on this website?
To oversimplify the answer:
this store is for people who want nothing to do with Steam, so you won't get any Steam keys from GOG.
BreOl72: Edit: if you want a Steam key - why don't you simply buy the game on Steam?
It's a bit confusing, but he wants to gift it, and perhaps he doesn't want his Steam account information to be connected to the gifted game, for whatever reason.
I don't think there's any way to buy gift codes from Steam without using your own account to do it?
Anyway, I would recommend buying a gift code from GOG, and giving that to somebody.
It would be a good way to spread some DRM-free game gifts.
If that's not an option, and I can understand why it wouldn't be, if the receiver wants to use Steam only, then go to Humble Store or Fanatical and buy the game from there.
You can keep your own Steam account unassociated with those purchases, and simply give the actual activating code to the person receiving the gift.