Congratulations! You've written your novel!
Now, comes more work.
The first draft of your story isnt expected to be good. It just needs to be written. It is in these next steps that you polish your work and make it ready for Wattpad or agents, or both, depending on what you want your end goal to be.
Once that first draft is finished, I suggest leaving it for a while. This could be a few weeks, a few months. Read other stories, watch movies, and clear the story from your mind. You need to come back to it with a clear vision, since looking at your own work objectively can be hard at any stage.
I strongly suggest doing at least two rounds of edits before you hand it over to anyone else. Spelling, pacing, plot holes. All these things are on you to find and correct during this stage. Again, it doesnt have to be perfect. Do your best to fix any issues that you find, make notes as you work, and smooth things out.
Then, once you've got it as far as you can take it, comes betas and CPs.
Betas are readers who are giving you a general reception to the story. They dont have to be writers or know the industry and what is required. They just have to give you an honest response to the story.
Think of Beta readers as the reviews you see on Goodreads. They will tell you what they like, what they dont, and what they think your book is similar to. This is all very important information, since they act like your future audience.
Critique partners are another group that are essential in writing. They are usually writers, editors, and the like who know the rules of writing and how to give advice for perfecting the work they read. CPs pick our grammar, pacing, character arcs, development, and all the things that editors and agents will be looking for. They are technical, rather than emotional readers, and can help you see the gaps in your story you may not have noticed before.
Finding solid CP and Beta groups can be hard, but is essential if you want to make your story the best it can be. Check out hastags on Twitter such as #CPmatch, #CP and the like. Ask on the Wattpad forums for Betas who may be willing to read the story before you post.
It is important to point out that you should research your betas and CPs before handing over any work. While we are all working towards the same goal, protecting your intellectual property is always an important consideration