Determine the Index Number of the Current Paragraph, Table, Section ...

The first questions is – why do you need to know the index number?

Rado, Dave. Word MVP Site, The (2005). Articles>Word Processing>Indexing>Microsoft Word

How Do I Generate an Index in Word?

The Microsoft Word Help suggests that you can automatically generate an index. Sorry, but you can't (the 'result' looks like an index, but the reader can't use it). You can automatically mark index entries: however, the amount of work required to edit the result into a usable index is usually double the effort required to manually mark the index entries one-by-one.

McGhie, John. Word MVP Site, The (2005). Articles>Word Processing>Indexing>Microsoft Word