Now the important thing is what Real Madrid will do with Mbappe as of now. He started badly in a couple of games but later scored multiples goals in one game. Hopefully he will adapt fully without taking too much time.
The problem they are going to have in that team is positioning, we all know the Mbappe is more comfortable when he plays on the left side of attack, rather than in the middle, he is definitely not a striker. Now in Real Madrid, Vini Jr plays from the left, and IMO, he is the best player in the world in that LWF position, so that leaves Mbappe coming from the middle. I don't think Mbappe would flourish from the middle and if he does not, with time there could be disagreements which might affect the team.
Without Mbappe in the squad last season, Madrid was still able to win the Champions League and La Liga, so the presence of Mbappe in the current squad will of course have a positive impact on Madrid game in the future, although he managed to score two goals in La Liga, but according to I think Mbappe is still not at his best as a goalscorer so far, so Madrid can't expect much from Mbappe at the moment, Ancelotti has a lot of very good forward players currently in his squad, so this really requires wisdom in placing the position of the front players that they have in order to maintain unity and consistency in scoring goals, I think the role that Mbappe had while playing at PSG previously could be a reference for Ancelotti to be able to maximize Mbappe current abilities.