does it have any effect on game?
Statistics indicate that fights are detrimental to teams' play, or have inconsequential benefits.
Fighting in ice hockey
Statistics indicate that fights are detrimental to teams' play, or have inconsequential benefits. 
when are you allowed to fight in hockey The debate over allowing fighting in ice hockey games is ongoing.
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Fighting in ice hockey [SEP] Effect on game
Statistics indicate that fights are detrimental to teams' play, or have inconsequential benefits. Since the 1979–80 season, teams in the bottom three of fighting-related major penalties have finished at the top of the regular-season standings 10 times and have won the Stanley Cup 11 times, while teams in the top three have won the regular season and Stanley Cup only twice each. One statistical analysis calculated that winning a fight benefited a team by about 1/80 of a win in the standings. Two others showed that fights increase scoring, but do so evenly for both teams so do not significantly affect wins.