Node Group of an Attribute Visualizer
This is quite doable with geometry nodes, just not as easy. I have developed a method to visualize numeric attributes in the 3D view.
Basically, it takes an arbitrary number, calculates the length of its digits, duplicates the input geometry points as many times as there are digits, and then creates instances of text curves to those duplicated points. Based on the indices of the duplicated points and the input number, it selects the correct curve number from the numbers 0-9.
I know this sounds very lengthy, but here I have posted a screenshot of my node tree. If I knew how to explain it in a shorter way, I would do it here. For a full explanation of why this works, check out my video tutorial.
https://youtu.be/_W47HfoeFsg
P.S. If you add a Mesh to Points node before you feed the geometry into this node group, and change the domain type to *Faces" or Edges, you can also visualize their attributes. I hope this helps you.