How do I get these measurements to show up along with my alignment guides? I don't see an option to turn them on.
You can't leave them on. Press and hold Fn when you select the layer. Framer will show you guides like the image above.
No I see the guides, I'm talking about the measurements (numbers) that tell me how long or wide they are. I don't see those. This is from a screenshot in a video tutorial.
Press ALT while you select a layer