Please be so kind as to read my full post before responding.
Thank you for your consideration.
The Data Table does not currently support changes of row heights.
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/controls/control-data-table
This makes it essentially useless for configurations on big displays with large heights and Font Size above around 40 since the letters will become partly invisible.
Please add a possibility/property, to change row sizes, or at least make them adapt to the Font Size.
I am aware that it's easily possible to fake a data table with variable row height with a Gallery and a few Labels.
See also:
https://powerusers.microsoft.com/t5/General-Discussion/Data-Table-Row-Height/m-p/290193