Hola Brey! Ambas significan lo mismo. Quizás en algunos lugares como España usen más "vale" que "dale" pero de todas formas se entiende el significado

Yeah they have the same meaning

It really depends on the country (and sometimes on the person). Some people use “dale” and “vale” as the same thing (to agree). As somebody else said, “dale” could be on that context like “okay, let’s go” -> dale, vamos And “vale” is used in order to agree something. “Vale, me parece” or “vale, estoy de acuerdo” Remember we also call “Vale” woman who are called Valeria or Valentina

If you are talking about the English words, yes. They are both synonyms of 'valley'. 'Dale' is mostly heard/ used in the north of England...🙂

Dale: is more of a call to action i agree let's do it, let's go "Dale, vamanos!" Vale: I agree, ok