It could be the beginning of a sentence concerning a female person.
du bist eine ... - you are a ...
It can also be an equivalent of the following expressions, said in resignation or exasperation to a female person, meaning:
Du bist mir eine feine Freundin! - A fine friend you are!
Na, du bist mir eine Expertin! - Some expert you are!
It can also be said in admiration, meaning the exact opposite.
The word schön means beautiful (it can also be spelled schoen). Then the phrase "du bist schön" means "you are beautiful".
Du bist means you are, Deutsch means German
Du bist gut. - You are good.
aber is used for here for emphasis. The sentence can mean "you are really good" or "but you are good".
You are great
du bist besonders means you're special
Du bist wunderschön = you are beautiful.
It means "you're funny".
You are beautiful
bist du in Ordnung = are you okay
Du bist eine hübsche Frau, du bist süß. = You're a pretty woman, you're sweet.
du bist scharf = you are sharp
"Du bist alles" means "You are everything".
Du bist die Ruh' = you are the peace.
You are great
Wie alt bist Du? means: how old are you?
You are I.
"You are there?"
Du bist meine Liebste. - You are my beloved. Du bist meine liebste Oma. - You are my dearest grandma./You are my favourite grandma. Du bist mir die Liebste. - You are most dear to me./You are my favourite.
Du bist der absolute Hammer! = You are totally awesome!