It just happens for Mbappe to be able to win an important trophy since the first official game he will play for Real Madrid.I think he will be a lucky player to achieve such feat and I think Real Madrid is more than capable to beat a team like Atalanta which is playing for the first time in their history at such levels.I am confident Real will win the Super Cup as I remember them being down by Napoli a much stronger team than Atalanta and they changed things around within 16 minutes left to play,so based on this I doubt they will have any problems against Atalanta.