STAMFORD — A Norwalk man was injured during a shootout after a Super Bowl party at a luxury apartment building in the city’s Harbor Point neighborhood Sunday night. Police say a 32-year-old man, who was attending the South End party in the function room of the apartment building at 111 Towne St., was shot two or three times during an exchange of gunfire that left as many as 20 shell casings on the ground. Guzda said video inside the building, called 111 Harbor Point, shows the two men who exchanged gunfire as well as the victim were guests of the party. Guzda said the man who started the shootout appeared to be waiting across the road at 110 Towne St.