It depends what you’re trying to share? If it’s a presentation to an audience gathered in a room, I send my slide-deck (with videos) to somebody on the other side to play.
For any Processing sketches that run in the browser (p5, etc.), there are live code sharing / collaborative editors, allowing everybody online to edit and view code changes simultaneously.
If you’re trying to preview Processing IDE (Java) sketches over Zoom, you could drop the sketch frameRate(). This means your animation is slower, but it’s easier for viewers to discern the motion.
Also, dropping your screen resolution in your monitor display settings may help. (It also makes everything larger and easier to see)