Hello, and welcome to Medium!
There have been many glitches in getting writers added. If you have been accepted as a writer that pub should appear in your drop down list. Sometimes it does not appear. I have had to delete writers and add them a second time before the pub appears on their side. On occasions I’ve taken a screen shot and sent it in my reply to say see, you really are on the writer list.
Regardless once you’re there you may start submitting stories.
It’s not about creating a resume. It’s a metaphor for how to treat the application and the best tips I’ve found to make the process a success. ;-) Food for thought, if you will. ;-)