Hello!
Im not quite sure what you mean by scale. But you can do a few things. You can zoom on a card by pressing and holding, or hitting the zoom hotkey (Middle mouse button by default), to enlarge the card in focus. You can also enable the ability to have the cards text shown seperately to the card when zoomed, by checking a setting in the Gameplay section of settings (I believe) called “Enable text box on zoom”. Thsi will give you access to seperate text so you don’t have to scroll on a card.
Finally, you can also enlarge the text shown on all of these in the settings by changing the font size up from the default of 27 px.
If you are meaning something else, please feel free to elaborate so that we can be on the same page.
Thank you!