To see what your headers and footers look like, you can preview them.
Click the round Office button in the top left of Word then select Print. From the Print options, select Print Preview:
When you click on Print Preview you're left with just a single tab. This one:
To get back to the normal Word ribbons, click the Close Print Preview button on the right. Scroll through your document and see how your header, footer, and page numbers appear in your document.