I believe there are several ways to approach this, using Embedded Data, Quotas, or external tools. But here’s the method I recommend the most:
You can set up a Quota for each question. Every time a respondent answers a specific question, the corresponding quota increases by 1. So, you'll have one quota per question.
Once the data is collected, you can calculate the completion rate for each question by dividing the quota count by the total number of responses.
Then, use a dashboard to visualize the data this allows for real-time tracking of question-by-question performance. This method is simple, scalable, and highly effective.