Explanation
Data Profiling, Quality & Distribution in Power BI / Power Query features To enable these features, you need to go to the View tab a Data Preview Group a Check the following:
* Column quality
* Column profile
* Column distribution

* Column profile
Turn on the Column Profiling feature.

Column distribution
Can use it to visually realize that your query is missing some data because of distinct and uniqueness counts.

Reference:
https://www.poweredsolutions.co/2019/08/13/data-profiling-quality-distribution-in-power-bi-power-query/
https://www.altentertraining.com/microsoft/power-bi/column-profiling-is-good/