Open Settings/Advanced Settings
Scroll down and you will see Clock Size (Taskbar) you will need to enter a value here dependant on the text size you want.
Below that you will see Clock text enter the text for what you want, you will find help here: https://www.displayfusion.com/AdvancedSettings/?Version=9.3.99.103#taskbar_clocktext
Then the Text colour you want and below that the text size.