There are many publishers out there, of all shapes and sizes, looking for stories of every imaginable nature, and so it may be that your next step is to engage a literary agent or identify a suitable publisher. Alternatively, you may prefer to self-publish, which can be quicker and advantageous in retaining complete control of the publication.

There are pluses and minuses, mainly regarding control, cost, and quality, with both options. According to the nature of your book, I am more than happy to advise on next steps.