A manuscript critique is the best place to start if you're not sure what kind of editing you need.
What’s a manuscript critique? A manuscript critique provides feedback on the three biggest issues affecting your novel.
What’s covered? Issues such as:
plot and structure
head-hopping
point of view
narration
character arcs and motivation
ineffective dialogue
info-dumping
showing and telling
setting and description
Here's what you get:
One full read-through of your novel
A 5–10 page evaluation of your book with feedback on what is working well, and notes, suggestions, and feedback on the top three big-picture issues that need some revision
A work plan with steps to help you revise your current draft