= = You Don't know how much i like you =
No. Cuanto?
Translation: Do you know how much I love you?
I assume it's attempting to say 'You don't know how much I love/like you.' It should be more like: no sabes cuánto te quiero.'
It means " and do not know how". :)
¿cuanto sabe usted acerca del lenguage español? in a formal way or in an informal way ¿cuanto sabes acerca del lenguage español? or ¿cuanto sabe/sabes acerca del idioma español?
Translation: You don't know how much I love you.
Translation: Did you know I love you.
I assume you mean "you know what I mean." Sabes lo que quiero decir." That literally means "you know what I want to say"
"(Do) you know that I love/want you(?)" Statement and/or question.
In English, "sabes entonces" translates to "you know then."
Translation: ¿Sabes Ingles? (Or ¿Sabes hablar Ingles?= Do you know how to speak English)
There is some missing information here: the direct object of the sentence. The translation would be "You don't know how much I miss...."