@good99,
You can use the following CSS code:
#wpdcom.wpd-layout-3 .wpd-comment-right .the-badge img {
width: 16px;
}
Put the code in the Top Admin Bar > Customize > Additional CSS > "Additional CSS" textarea, save it, delete all caches and check again.
Please don't forget to press Ctrl+F5 (twice) on the frontend before checking.
The red marked value can be changed as you like.