I've shared a project, but when I search it in the search bar it doesn't show up.
Why is this happening?
How can I fix/share it?

Scratch's search engine uses Google. Google can't go through the entire website every time you search, so it has archived copies of pretty much everything. Since your project is relatively new, it isn't in the archives yet. That's okay, however, because people don't use the search bar very often! Most people see projects when someone loves or favorites them. Anyone following you will receive these updates. Maybe if you follow some people, then they will follow you! Then you can see each other's projects. If you want someone you know in real life to see your project, then you could e-mail them or link or even write it on paper.

I hope this helps you, and you have a great experience on Scratch!

Thanks! One question though:
How do you go from a “New Scratcher” to just plain “Scratcher”?

The site will automatically let you advance once you've been active for a while.