Education is something that is taught and develops over time in someone, whereas intelligence is an intrinsic element with which an individual is born. As a result, it is not developed, but it will be improved over time. People learn knowledge through education, but no one can teach you to be more intelligent; it is something that only the particular can attain.
In the Oxford dictionary, intelligence means "the ability to learn, understand and think in a logical way about things", and similarly, education means "a process of teaching, training, and learning, especially in schools, colleges, or universities, to improve knowledge and develop skills". I will say that intelligence is the ability to use our education in a way that is required for ourselves. It is true that a higher degree of education leads to a higher level of intellect, and vice versa, but I don't think this applies in all scenarios. If a person is so intelligent but doesn't have enough education on the matter, it will not be fruitful. And to answer your question, if a person is not intelligent, and somehow managed to get a better education, he or she can go in their life to a limit. But if they don't know how to proceed further even with such education, that will not end well.
Logically thinking, I don't think, without intelligence, there is no meaning to education. Even to thoroughly learn something, a person should have a bit of intellect.
“It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends."
– Albus Dumbledore, Harry Potter and the Sorcerer's Stone, Chapter 17
