Use Fiverr to find someone who will properly format your book. KDP is really finicky about proper formatting, and everything can get messed up if your manuscript isn't done right.

Really, you could use Fiverr for everything on a self-published book. The actual mechanics of posting a book on Amazon are pretty simple. The challenge, as always, is finding readers, getting reviews, and building any sort of traction with your book, especially if it's fiction.