How much vocabulary is on average required to speak English language fluently?

.LEARNING ENGLISH OR ANY OTHER LANGUAGE CAN NEVER ASSIST ON ONE PILLAR VOCABULARY FOR INSTANCE, IS CONSIDERED AS ONE OF THE MAJOR PILLAR IN LEARNING LANGUAGES .FOR THAT WE MUST ASSERT GRAMMAR RULES, CONJUGATION AND WRITTING SKILLS SO WE CAN SAY WE ARE FLUENT IN A CERTAIN LANGUAGE.