Sore that doesn't heal, is oozing clear liquid, has some pus and bleeds some, what is it, how to treat it. It is in a skin fold keeps forming moistur?

Skin fold wound. This wound requires visualization in order to make a diagnosis. Patients with skin folds are at risk for particular wounds that have a fungal component to them, involve friction, pressure from overhanging fat (pannus), and congestion of venous and lymphatic vessels. One or any of these may be involved. Consider a visit to a wound center.
Non healing sore. A non healing sore needs to be evaluated by your doctor or a dermatologist. There are a number of different possibilities and the treatment needed depends on the diagnosis.