The sentence 'Tout serait bien' may be translated as Everything would be fine. The sentence is incomplete. For it indicates that all would go well if something else did or didn't happen.
As I understand you question: "as, a" are forms of the verb "avoir", (to have)tu as (you have), il / elle a (he, she has)"bien" means well; and "tout" means all."tu as bien tout compris ?" is a...
The sentence 'Tout est bien qui finit bien' means All's well that ends well. In the word-by-word translation, the noun 'tout' means 'all, everybody, everyone, everything'. The verb 'est' means...