I'm not that interested in boxing, watched kind of regularly in my teens, and watch UFC from time to time so I'm not that knowledgable.
I won't guess about which round the fight is going to end and by what means (KO, TKO, Score), but I assume that Mayweather is going to completely wreck McGregor.
Yes McGregor is a really successful, skilled fighter and yes boxing/punshing is one of his strengths, but he's not going up against just anybody.
He's going to fight probably the best pound-for-pound boxer ever.
To think that he even has a slight chance is ridiculous in my opinion.