I installed a vinyl floor and after I put it down a part of it bubbled up as if it didn't glue. How can I fix

Did you give it 3 days to set? If not, then let it go for three days. If that does not work, you will have to cut the area, and get a seam seal kit to glue it then reseal it. Good luck.

The glue for a vinyl floor product will always cause small bubbles to form which usually go away within 24 hours. It is said that the glue not only reacts with the the backing of the vinyl, but more so with any floor covering beneath it to form a gas, especially if you did not use any type of skim coat material over the old flooring. If the gas bubbles do not go away on their own then you can make a tiny slice in the vinyl and press the air out with the palms of your hand. Make sure to use a very sharp knife, preferably a utility knife with a fresh blade. The best place to do this is along a grout line in the pattern, as those are usually recessed slightly. The glue should still be tacky enough for the vinyl to adhere properly. It is rare that you need to inject more vinyl glue to get the vinyl to adhere, but I have heard of installers doing that before.

Hope this helps, good luck with that.

I have heard that you can make a small slice in the vinyl in the middle of the bubble. Then CAREFULLY inject glue in the slice & then with something heavy smash it back down & keep it there until it dries.

Now, mind you, I have never tried this method. I have only heard of it.

sounds like you got air trapped in it. Hopefully, the flooring has pattern or texture so you can make a small hole or sharp cut to release the air. Use a rolling pin and roll it toward the air hole.

If it is lacking glue, that's another problem someone more capable should answer.

You may have to inject glue into the bubble and set some heavy weight on it.

use a hair dryer on the bubbled area, this should soften the glue again, press down.

depending on how big the bubble is sometimes you can either use a blow dryer or CAREFULLY iron it to shrink it also depending

on how long its been you can get a rolling pin and roll out to closest edge

use a syringe and an adhesive the sufficiently liquid, inject it into the zone ,and then wait until it should be ready to stick.