There Is Nothing To Stop You
There is nothing to stop you publishing right now.
You could publish your work chapter by chapter on Wattpad.
You could publish your work for free through Amazon’s KDP platform, and set a price for your book earning yourself royalties of 35% or 70%.
You could publish a physical paperback or hardback copy.
You could record your story and sell it as an audiobook.
But whatever you do and however you do it, there is nothing to stop you publishing right now.