Top Valued Topic can be helpful when it comes to optimizing a page. Remember, a page should always focus on one subject and cover it well, even if it ranks for many different terms.
Trying to optimize one page for many different topics, each of which may have their own intent, almost always does more harm than good.
When trying to determine the subject of a page you’re planning to optimize, examine the URL and page title first. If you still can’t decide, then look at the Top Valued Topic for guidance.
The Top Valued Topic doesn’t always indicate the primary subject of the page. But, at the very least, it will give you an idea for creating valuable supporting content.