I have a bump on my finger nd I don't know what it is it doesn't hurt but its hard and its on my index finger just about an inch from my knuckles?

Other possibilities. Include ganglion of tendon sheath and mucous cyst- ganglion of joint. These fluid filled cysts can arise spontaneously, after trauma, or in association with arthritis of a nearby joint. Even though they are fluid filled, the fluid (mucin) can be very viscous, almost solid. Most resolve without treatment. If bothersome see a hand surgeon for an evaluation.
Finger bump. Sounds like it might be a wart. See a dermatologist to make sure it isn't anything more serious.