If 5 penalty shootout are tie on football then the referee can allow the teams to pick other players maybe three or five to start the shootout again until a winner is found.

For Men's Football, the 1994 and 2006 World Cup Finals went into a penalty shootout. For Women's Football, the 1999 and 2011 World Cup Finals went into a penalty shootout.

5

Italy was champ with a 5-3 penalty shootout win after tieing 1-1 with France in overtime

A penalty is given when a player 'fouls' a player inside the 'box'. Then the player has a direct shot like a free kick.

A penalty is also in play when after the usual 90 minutes and extra time (30 minutes), players arrange for a penalty shootout.

Hope this helps.