I’m a bit confuse, does the writing portion of the ACT help your composite score or just combines with the English? Or does that still not help at all?
Writing does not effect composite. You are given a fifth subscore which combines writing and English (you can look up how this is calculated via a Google search). This subscore (English/Writing) has no impact on your composite score. Colleges can choose to use this score in admissions, or ignore it, if they wish
No it does not affect the composite in any way.