The YouTube video "Score 100/100 in SEO" offers advice on optimizing content for Rank Math's SEO tests. The video emphasizes writing content that is natural for human readers before optimizing for search engines and provides specific advice on how to determine a focus keyword, optimize content for that keyword, and use Rank Math's Content AI to suggest secondary keywords. Users are advised against overusing keywords and to connect their site to Rank Math for additional optimization suggestions. The video also covers several SEO tests that check the location of the primary focus keyword, including the presence of the keyword in the title and URL. Other test checks include content length, subheadings, and image ALT text. The video also recommends adding media files and using emotional and power words to improve engagement. The tests serve as a guide, and the video emphasizes that articles with lower scores can still rank well if all other factors are optimized.