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No. Worms do not have legs. They move themselves by multiple muscle contractions inside their body.
The big difference between roundworms and segmented worms is that segmented worms have a real circulatory system with blood. Many segmented worms also have less developed eyes than roundworms-these segmented worms only have eyespots, like flatworms. But other segmented worms do have more developed eyes. By about 510 million years ago, some of these segmented worms were already evolving into fish. But many of them stayed segmented worms, and there are still lots of segmented worms all over the Earth today, on land and especially in the water.