If Leverkusen can be able to hold on and get a point against Munich, then they can go the complete season unbeaten, and their chance of winning of getting point against Bayern Munich is high because they collected four points against Bayern Munich last season.
If next week when Bayern Leverkusen play at home to host Bayern Munich win. maybe the German Bundesliga championship race is over. most likely Leverkusen can win it even though they can't lock the championship because there are still many matches. but it can be said that the mentality will rise dramatically. while Munich mentally will drop in addition to the point difference also being away.
we are too early in predicting who will be able to survive to win the Bundesliga title while we don't know what will happen because this is a match between big clubs which can always provide surprises and a draw, win or lose is not the last story for Leverkusen or Bayern Munich because this is not the last match but there are still many matches to be missed.
For example, if Leverkusen wins, there will only be a difference of 5 points, whereas this difference is not too big for Bayern Munich, whereas we don't know what will happen to Leverkusen because currently they are unbeaten but will at least experience at least a few defeats.
Let's think again that Bayern Munich, one of the big clubs that always dominates the Bundesliga, won't even let any club take the title from Bayern Munich's power and we'll see in the final match of the season whether there will be another surprise.