Your theme will be submitted for review to be distributed on the official WordPress.org Theme Directory.
Read the requirements before updating a theme
In order to have your theme hosted on WordPress.org, your code is required to comply with all the requirements on the Themes Team handbook page.
Before you can upload a new theme, please log in.
How to upload a theme update
If you are uploading a theme update, simply increase the version inside of style.css and upload the theme-name.zip file again, just like you do with a new theme.