How to prepare data for chart

Scatter plot doesn't allow two axis of categorical data

You could use a matrix and a measure that returns a •, and use conditional formatting to colour. Or you could use a matrix with a measure that returns a SVG.

Alternatively this could be created with deneb

This https://vega.github.io/vega-lite/examples/circle_github_punchcard.html could be modifed to do what you want. You can remove the size element and add a legend to get colours

Hi ZYTOMEEN -If the scatter chart approach does not work as expected, you can use:

"Dot Plot by MAQ Software" (Power BI Marketplace)
"Matrix Visual" with conditional formatting to simulate the dots.

Hope this helps.