If I have had a few ring worms on my legs and I don't now what to do would should i do?

First you should know (or perhaps you already know) that ringworm is not a worm at all but is a fungus that forms round patches on the skin, and it is contageous. Second, it is more likely to occur in moist areas such as the armpits or groin, but can occur elsewhere.

So, rather than risk spreading it around you should see a doctor to confirm that it is ringworm, and then follow the doctor's advice on treatment which will likely be a topical fungicide.