For group stages (this week and the next two) there are neither, draws are allowed.
After that, the knockout stages can't have drawn games, there must be a winner. If the regular 90 minutes ends in a draw, extra time is played for and extra 30 in-game minutes and then if it is still a draw after that, penalty shootout is a last resort to break the tie.
Penalties are the only guaranteed tie-breaker in PES and are a normal feature in cups. The only in-game alternative I can think of is setting up a golden goal rematch but that would most likely take longer to finish and be less reliable (imagine a 0-0 match being prolonged until someone scores, it could easily be another 90 minutes)