I cut my knuckle while chopping veggies. i pressed the skin down to stop bleed. only peroxided sealed wound. it has healed and now there is a small lump under. it is painful to touch and slightly unpleasant to bend. should i try to drain with needle?

Please do not try to drain it yourself. Don't squeeze it either. It could be infected and may need drainage, but this should be done by a professional (healthcare provider). I would recommend you see your doctor or go to an Urgentcare. Meanwhile, you can apply warm compresses to the area (washcloth with very warm water works well) several times/day.