Hi SRP,
Thanks for reaching out to us on the Microsoft Q&A forum.
On Microsoft Learn, as we complete modules and courses, we accumulate Experience Points (XP), which serve as a measure of our learning progress and commitment. While these points currently don't have any additional functionality beyond tracking our learning journey, they play a role in motivating us to continue learning and advancing through different levels.
Levels and Experience Points (XP) act as incentives as we navigate our learning path on Microsoft Learning.
Additionally, users have the opportunity to review their answers to knowledge check questions after completing them by clicking on the "Review answers" button, as depicted in the provided screenshot.
Most of the Learn paths have a Sandbox option to complete the exercises for free. In some cases, if you don't' find any sandbox to use, I suggest setting up an individual Azure account.
With the Azure free account, you'll enjoy complimentary access to a range of Azure products for 12 months. Plus, you'll receive a $200 credit for the first 30 days after registration, and access to more than 40 services that are perpetually free of charge.
You can sign up for Azure Free Trial subscription here: Create Your Azure Free Account
Here is the FAQ document on Azure Free Trial: Azure free account FAQ
If the information is helpful, please Upvote & Accept Answer so that it would be helpful to community members.