Hello Jose Niguidula Enriquez
You are correct.
I confirmed, there are only 53 modules available for sc-200 Security Operations Analyst.
https://learn.microsoft.com/en-us/training/challenges?id=d85c265a-7558-4f7a-9f8e-8f78fa378196
For issues related to the cloud challenge, you can contact the Cloud Skills Challenge support via - Challengesupport@microsoft.com
I hope this answers your questions.