How to use an image for a font?

I just created 10 pngs, they are the numbers 0 - 9, with metallic boarders, and custom painted space pictures inside. I want to use them to display my score, I thought it would be as easy and importing them into Unity and selecting which ones corresponded with which images. But the custom font wants a material?

How can I display my score with these images? I’m sure I can do it with a script but I have no clue how. I’ve read other questions, but the only one I could find that seemed to be what I wanted had a link to a tutorial that no longer exists. If you could just point me in the right direction, I’d appreciate it.

Create → Custom Font
You need only 0 to 9 so it will be easy otherwise you have to set rect for each alphabet you want to use from texture.