Certified GKH Gardening Expert
Unfortunately, it will be hard to give any advice without a photo. Tomato stalks have a normal bumpy growth that will turn into roots if allowed to touch the ground. This may be what you are referring to, although I couldn't say for certain.
As for not bearing fruit... There are many reasons for this. This article will help: https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-blossoms-no-tomatoes.htm