So I have two small goldfish and one big fish that I won at the carnival, and put them in a clean trash bag filled with about 4 gallons of well water, and placed it in a open trash can. Are they going to be all right till I get a fish tank?

Hmmm, I don't think so. How soon can you get a fish tank? Do you know what to do and how to do it?

You better do some reading on goldfish... my guess is that they aren't going to have a very long life.