Hi there and welcome
The normal font is 12, this is what is most commonly used in word
To set this always as the default
First, launch Word and use the keyboard shortcut Ctrl+Shift+F to open the Font dialog box shown below. Here is where you can change the default font style, size, effects, and even the color if you want.
After you choose your settings, make sure to click the Set As Default button in the lower left corner. If you only click OK, it will change the font for this document only.
If you have any problems, or would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.