Can you keep a gourami in fish bowl?

Well depending on what kind of bowl yes. I would recommend one bigger than 3 gallons though since gouramis need lots of water. A more reasonable choice though would be to buy a dwarf gourami. These are much smaller and easier to take care of.

I'd recommend it only if you are in a very warm climate, otherwise they'll need a heater. A five gallon with a heater would be my minimum recommendation, and then only one fish in it, too.