Q.What Can I Do for My Zucchini Plant?
It had something that looks like white mold or fungus at the base of the plant, it has fallen over and burst open and there is this orange-yellow stuff coming out of it. The plant looks healthy everywhere else. I don’t see any worms, or know where to look.

Certified GKH Gardening Expert
It sounds like you may have vine borers and the damage to the base has attracted additional fungus. This article will help you with the vone borers:
https://www.gardeningknowhow.com/edible/vegetables/squash/squash-pests-identifying-and-preventing-squash-vine-borer.htm