Is there an easy way to display the memberCount of a list-id?

Hi folks,

Since I am new, I greet everyone here.

So now to my question:
Is there an easy way to display the sum of all registered members of an List-ID?

In the way like url: ‘…/?p=memberCount&id=2’ so I get a blank page with only the number of subscribed members displayed.
I would then be able to display them more easily and possibly integrate them into a progress bar. For example in Wordpress

Our background:
I work voluntarily and we use phplist already about 1 1/2 years also as a petitionsystem.

I’m happy if someone can help me.

Kind regards

PS: Excuse me, I have not worked through the board now, the abundance kills me.