Here's the breakdown:
* Mucho: Means "a lot" or "very" in Spanish.
* Buaino: This is not a real word in either Spanish or Italian. It's a misspelling of "buono" which means "good" in Italian.
So, to say "very good" in Italian, you would say "Molto buono" or "Buonissimo."
If you're trying to say "very good" in Spanish, you would say "Muy bueno."