If you do not understand the meaning of the question, please answer that I do not understand.
Please tell me which part you don’t know if possible.
Are you saying that you drag and drop the .blend file that you set the material to the object (not using the link function) to blender?
What is your version of blender?
What is the renderer used by the material producer? Renderers are [Cycles], [Eevee], etc. Please tell me what the material producer is using instead of what you are using.
Is there no material node at all by looking at [Shader Editer]?
Are you able to see the material of the material producer properly until now, can you not see it this time, or is it the first attempt?
Can I see material made by another person who is not the material producer?
Do you know what the material made by the material producer is, is it a simple material such as red or blue, or a complex combination of nodes?