I have a lump on the bottom teeth row front right side its painless and what shall i do???

Lump: Any pain, bleeding, or as in your case swelling, requires immediate investigation. Could be anything from simple to complex, but must be evaluated by a professional to be diagnosed and treatment planned. Please call your Dentist for an examination.

Lumps need a look: If you notice any lumps anywhere that were not there before it should be looked at by a medical professional. I can't tell from your question if the lump is actually on your teeth or on your gum or other soft tissue. Best to have it looked at by a dentist.