Question

We know that the electron continue to revolve around the nucleus but if the electron are in covalant bond will they continue to revolve around the nucleus

Answer 1

It doesn't. Planetary model is only a... model. One that explains some of the observed properties, but it has not much to do with the reality. Electrons in atom or molecule don't behave like a point particles, they behave like waves. They are not in any particular position, so they can't change their position, as planetary model suggests.