How long would a puncture wound take to heal completely?

Time to heal wound: The time to heal is variable and depends on many factors; depth, bone or tendon involvement, contaminants, infection, blood supply, nutrition and wound care. If you are slow to heal, ok to check with your doctor or local wound care clinic.

Depends: On the severity of the wound. With the right wound care soap water antibiotic ointment covered with a dressing, the wound shld heel within days to weeks. If things aren't progressing well or there is increased pain erythema etc, see your doctor. Check your tetanus status.