I lost some of my big toes nail by stubbing it with a lot of force on accident the skin underneath has gone hard there was some black but i picked it all out no bleeding pain is gone is this normal its been 4 days since it came off its 5% of nail?

You lost 5% of your big toe nail is what I understand your question without pain or bleeding. Or the nail came off leaving 5% of the nail attached. Either scenario without infection the nail will grow out. Takes 6 months to grow out completely. Any bleeding has stopped. No other signs of infection Should be fine with time. Trim any sharp edges.