Okay, Calm down.
First, i would seperate the adults from the fry. You don't want to squish your fry so i would use a turkey bastor and just suck it up and squirt it out into a different container.
Next, that will let you get closer to notice if there is any permanent damage to your fry. For the first couple of days a fry just looks like a head and a tail. The bad news is if it didn't form fully or it has permanent damage then it may be best if you kill it fast with several methods others explain on this forum. The good news is that you may be able to save it, you just need to get a good close look of it.
Now there is one thing to keep in mind, Premature guppy fry. When you seperate your guppy fry and place it into a breeder or small container floating in your main tank. Does your guppy fry have such a huge tummy that it looks adnormal? If the tummy is very big then it may be premature and because it hasn't finished eating the rest of fry's egg yolk, it can't swim. I had a batch of guppy fry that were born premature and they just laid on the bottom of the breeder for a couple of days and slowly one by one they began to swim around.