@Vamitul – hm. This is a little "toughy"…
But let's see:
The character in the story, that represents the footnote number or sign (in your example the * or **) has a contents property.
And this contents property has the value of: "FOOTNOTE_SYMBOL".
You should be able to count thiese FOOTNOTE_SYMBOLs in a particular story. A TEXT search should do.
What you cannot get in a direct way is the "visible contents" or "visible representation" of that symbol (the * or the particular number)!
If you want that, you need to analyze the footnote options. From that you should be able to determine what kind of symbol it might be (amongst other properties) and calculate the symbol's content from that…
Just an outline of my thoughts here.
Uwe