Use cross-references:
A cross-reference refers to an item that appears in another location in a document. For example, you can mention "Figure 1" in your document and refer the reader to the figure's location elsewhere in the document. By default, Word inserts a cross-reference as a hyperlink that you can click to be taken directly to the cross-referenced item. You can create cross-references to items such as headings, footnotes, bookmarks, captions, and numbered paragraphs. If you add or remove content that causes the referenced item to move, you can update the cross-reference.
Normally in MS word cross-reference can be added via "Insert" menu. There are different options allowing you to insert the numbered-item, item text, page or paragraph number of the object you referencing.
Every time you want to refresh the cross-references you can use a combination of
- Ctrl + A (select all)
- F9 (refresh)