Hello,
Please check the samples included in the package. All packages include samples of all methods.
On https://www.phpdocx.com/documentation/snippets/get-font-size-content you can find a detailed custom sample that illustrates how to get the font size. The same iteration can be used to get other styles.
You need to translate the style information from getWordStyles to the options supported in DOCXCustomizer.
Regards.