Maybe in Dortmund's match with Chelsea it will let Chelsea win, but it is possible that when there is an opportunity to score, Dortmund will do it. Meanwhile, Dortmund will take advantage of Schalke because it is a very easy opponent to beat. Dortmund should be able to score more than five goals so that they can win the first position and shift Bayern Munich from the top position of the standings.
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Meanwhile, in the Bundesliga, Dortmund will have a little trouble if they have to score more than five goals at home to Schalke, even though Schalke is a team in the relegation zone. After all, the difference in the number of goals between Dortmund and Bayern Munich is still very large now.
The Bundesliga is still not over, there is no reason for Borussia Dortmund to force itself to score at least five or even more in the match against Schalke. Dortmund have the same points as Bayern Munich, they just need to be consistent and maintain the point difference while waiting for Munich to make mistakes in the Bundesliga.