"用足尖跳舞" can be translated into English as "dance on the tips of one's toes" or more commonly and idiomatically as "dance en pointe" (in the context of ballet).
"Dance on the tips of one's toes" is a literal translation that describes the action accurately.
"Dance en pointe" is a ballet term specifically referring to the technique of dancing on the tips of the fully extended feet, often with the help of pointe shoes. This is the more professional and commonly used term in ballet contexts.