A squash plant can pollinate its own flowers. But they're definitely pollinated by bees and not by wind. Next female flower you get, take a little paintbrush, grab some pollen off the anther of a male flower, and gently brush it onto the stigma of the female flower.

If you plan to save seeds, then you need to isolate the female flower before it opens, with a little cheesecloth or screen or whatever; and hand pollinate it from the same species of squash with a clean brush.