The verb scoop means to buy something quickly. It might be used around Christmastime, in conjunction with a item that is selling fast:
People are scooping up these Xboxes like crazy!
Now, let's take a look at your sentence:
They have to yet scooped it out.
That's not quite right. I think what you're trying to express is:
A lot of people are scooping these up, but the store hasn't sold out yet.
People scoop up items, but stores sell out of items. And the scooping can start well before the sellout happens. Think about tickets to a championship football match: once the final matchup has been determined, fans of both teams begin scooping up the tickets. But the term scoop out is not used to describe when no more tickets are available; no one would say:
The tickets are all scooped out. [incorrect]
The tickets haven't been scooped out yet. [incorrect]
Instead, we would say:
The tickets are all gone. Fans scooped them up fast!
The game has been sold out. They've all been scooped up.
Now, you could say it in a way similar to how you were trying to say it – if we omitted the word "out", and included the word "all":
You can still get tickets! The tickets haven't all been scooped up yet.
Not all the tickets have been scooped up. A few are still available.