How long does it take to go from "in development" to be in the store? What is my URL thatI can share with people?
I assume you mean time it takes to get from submitting your skill to going live. It varies but I have had something done in 2 days and another take a 4 days. A lot depends on how clean your skill is. There are a number of reasons your skill can get rejected that requires you to fix or adjust something. This will cause iterations in the process.
Once published, you can use the share button on the top of the skill's page in the store.