How many suggested keywords must I use to get an A++ score on my draft?

Each keyword is different, but typically, if you integrate approximately 60% of the words, your score will reach an A++.

Your goal is to create the highest-quality content on the internet for your keyword. You should be using the words in the "Content Analysis: Topics Google Likes in Posts" section of the report to structure your post, not just sticking the words in your post. Stay far away from "keyword" stuffing, or you will be penalized by Google (very bad).

Follow the report (watch the tutorial on the main page and also the one on the KW Lib page) and write a great, comprehensive, high-quality post that is the last stop for a reader on your keyword as well as add something unique (like your perspective/experience) so it's not a rehash of other material.

It is important that you prioritize the words in the order they are listed, so focus on the top 40 words, in order. Though it is great to use as many of the words as possible, the top 40 are the most important, and it is critical that all words are used really naturally in a value-added way so you don't get penalized by Google for bad content.

Use enough, in priority order, to get an A++, hit or exceed your word count, and make sure yours is the best and highest quality post out there on that keyword.

Note that even if you reach an A++, the best practice is to also must meet or exceed the word count on your report for that keyword. The word count is measured separately from the grade.