you are too kind, that's too kind of you
you are too kind (gentil = masc., gentille = fem.)
'Tu es tellement gentil / gentille' or 'vous êtes tellement gentil / gentille'. The latter is a formal version.
Properly written, the sentence "tu es trop belle, toujours la classe" means "you're too beautiful, always classy" in English.
You are really kind filled with charisma and I'm already looking forward to seeing you young lady.
Es means "it" in English.
It is not
'como es' means 'how is'
Cómo es means: How is...
It means "name is..."
Ahora es means "Now is'
es por ti = is for you
"¿Cuánto es?" would be "How much is it?"