How to add text in the display text in text-TextMeshPro?

I am using the text-text mesh pro. I imported a component-score display in the text inspector and the script is also added but somehow

I am unable to add any text in the ‘display text’ part. Kindly help me out.

This is a reference not an input field. Meaning you can’t write there only drag and drop a gameObject with Text component attached to it. Whenever you see this dot on the right, it means this is a reference. When you have a field without a dot, you will be able to write the value in.
Also consider joining ArtOfMakingGames - Unity learning discord channel: