In the beginning, Real Madrid was not very productive in scoring goals, we know before the UEFA International break Madrid was not good but after that they were great and rose slowly, Lewandowski is indeed the top goal scorer for the time being, But I'm pretty sure that Mbappe and Real Madrid are now getting more solid in their matches, I'm pretty sure they will get more goals, this will indeed be a very interesting competition in the race for goal scorer in La Liga, Mbappe's absence for a few days is indeed an opportunity to catch up, but I'm pretty sure Mbappe will stand at the top at the end of the league as the top goal scorer.
Currently Real Madrid is trying to continue to catch up with Barcelona and create a winning streak like their rival did if Barcelona makes mistakes in the next few matches then Real Madrid can easily take over the first position moreover the difference in points between the two is also not too big with 1 defeat and 1 draw Barca's ranking could drop but with the note that Real Madrid continues to perform consistently and does not lose any more points.
For the top scorer there is still plenty of time for Mbappe to create goal opportunities if he does not get injured I am sure Mbappe will be the top scorer in La Liga this season the statistics show Lewandowski is only 2 goals ahead and that is not a big difference.