In your Surfer's account, navigate to SERP Analyzer.
Type query and choose the location you're interested in.
After the query is completed (it may take up to several minutes), click the query on the list.
Below the chart section, you can find the Content Score evaluated for all top50 results.
If your URL isn't in top50 results, use "Compare your website to competitors".
Put any URL and press "Enter" or click the "Compare" button.
After a few seconds, the Content Score for your website will be evaluated and shown as the first position on the list.