How to use : in Blender 3.x :

1. Copy the .Blend file to your Blender's asset folder (assuming you already created one).

2. Locate the node group in your asset browser (you can change the preview with the thumbnail I provide).

3. Drag it from the asset browser to the shading editor (on your sticker decal material).

4. Connect the outputs to the corresponding input of the shader.

5. Tweak the parameters to your need.

6. Enjoy !

How to use in Blender 4.x :

Once the node group is copied in your assets folder, it is immediately accessible in the shader editor via the right click menu add => Quick Damage will be there.