i am on a 4k monitor and the game text is too small to read. i use system scaling 225%.
if you want the text to be readable, the way is to lower the resolution of the game. in my case to 720p since i want to play it to be in full view in a window.
go to the game folder
right click the exe and go to properties
go to compatibility tab
click change high dpi settings
click override high dpi scaling behavior
change it to be system or system enhanced.
launch the game again and it will be readable but much lower res unfortunately.