Flux gusto
prima gusto
el gusto es mio = the pleasure is mine
well gusto is a present form of the verb gustar meaning to like. me gusto means i like.
Un gusto means: a pleasure (as in: It's a pleasure to meet you)
al gusto means to taste - carne al gusto is literal translate meat to taste but is slang/mean to state your pick/selection of meat exampel : tacos con carne al gusto - tacos with your choice of meat
with pleasure
gusto means pleasure e.g. me dió mucho gusto - it gave me lots of pleasure mucho gusto - pleased to meet you or if it is gustó then it means like e.g. me gustó la comida - I liked the food
It's Spanish
"Muchos gusto" is not a standard Spanish phrase; it seems to be a mix of "mucho gusto" (nice to meet you) and "muchas gracias" (thank you very much). It could be a typo or a blend of both expressions.
The Spanish phrase "mucho gusto" translates to "nice to meet you" or "pleasure to meet you" in English.
The pleasure is mine.