Answer
Guerreiro has won 2 DFB-Pokal titles with Dortmund. The DFB-Pokal is the German Cup competition, and Dortmund has won it a total of 5 times. Guerreiro played a significant role in Dortmund's 2017 and 2021 DFB-Pokal victories, contributing with goals and assists. He is a key player for Dortmund and has been instrumental in their recent success.