I'd have to read more (or get clarification here) to understand what you mean; pp82-106* of a translation appear to cover a fair amount of Becoming to me?

https://archive.org/details/georg-wilhelm-friedrich-hegel-sc...

* including subheads such as "Moments of Becoming" and "Sublation of Becoming".

(ok, reading pp106-108 suggests that although Becoming is not Nothing for Hegel, it is self-contradictory and hence a special kind of a non-being, a determinate being?)

You should start with the Phenomenology of Spirit