Q.Growing Gerber daisy
What causes a bloom of a Gerber daisy to droop? I had it for a couple of days. It was fine and then the bloom looked terrible. My other one is fine. This is a houseplant in a pot.

If you mean you had just purchased the plant, then one of them drooped, the most likely cause is needing water. Here is an article on gerbera daisies: https://www.gardeningknowhow.com/ornamental/flowers/gerbera-daisy/growing-gerbera-daisies.htm
Gerberas don't make a very good houseplant, because they need a lot of light and room for their roots. But this article on houseplant care will help you if you're determined to keep them in the house: https://www.gardeningknowhow.com/houseplants/hpgen/basic-care-of-houseplants.htm