How is the chick?
Legs look puffy from what I can see and the navel is not closed.
Gather the chick up, swab the navel with chlorhexidine, then apply a dab of triple antibiotic ointment or bacitracin.
If you have an incubator, fire that up and put the chick in there with humidity around 50-60% Put the chick in a paper towel lined coffee cup and leave it for a while. See if it starts to move it's legs, come around and if the navel starts to close.
If you don't have an incubator, you'll need a warm place for the chick, a heat lamp, heating pad cave, etc. I'd still place the chick in a cup, see if it can get itself right.
If not in the incubator, do monitor that the chick is not overheating. You can give it a drop or two of poultry nutri-drench or sugar water every few hours.