Go to Inspector > Chart > 3D scene. You can then move the chart around with the arrows until the labels show up clearly.
If you would like to let Apple know what you want there is a feedback link under 'Numbers' on the menu bar.
Have a good day
I am pretty sure you can rotate the text in inspector. It should be under the Metrics tab; just make sure you have the text highlighted first and you can change the angle.
This thread has been closed by the system or the community team.
You may vote for any posts you find helpful, or search the Community for additional answers.
Numbers 3D Column chart labels
Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.