How to set up a solid pie chart？
That is currently not supported. As for data values for each slice, there's a request for that:
https://github.com/metabase/metabase/issues/12977 - upvote by clicking on the first post
I have voted.
How to set the total not to be displayed.
@cnfjmail It is currently not possible to hide the total:
https://github.com/metabase/metabase/issues/9432 - upvote by clicking on the first post
Perhaps another chart type would work better for you - like Row chart?