I had this rushes on top of my foot about 20yrs however its been itching merecently and I went to seepharmacist and was given Lamisil (terbinafine) terb but still?

See a dermatologist. Your pharmacist gave you a fungus treatment. You may have a fungus, but that is not the cause of intense itch on top of foot. You probably need a prescription cortisone. Meanwhile try otc Hydrocortisone cream.