Hey! Welcome!
You can use heightmaps to simulate engraving. in/out.
The idea is to create a texture with the text. Use it as a heightmap. Create a plane from it.
Now all you need to do is add some faces to the plane so it becomes a cube. I don’t have time to showcase it now but if you’ll struggle, let me know, I can help you tomorrow.
EDIT: I had another idea to use bumpTexture, did a quick forum search and here you go: