Dortmund can find this chance like once in ten years or so as of now. But they messed it up anyway and handed the Bundesliga title over to Bayern Munich. As I believe that Bayern Munich are likely to start recovering and being a more consistent team again with Tuchel, Dortmund's job is harder. However I think that they don't care about how many times they win this title as it isn't the priority.
We will continue to watch Dortmund concentrating on their main goal as usual which is to grow new talents such as Bellingham, Haaland and so on. By saying "to grow" of course I don't mean only their youth setup. They have really good scouts and they should be able to find new big talents at young age.