Can't find anything.I know that in windows 7 was an option to change the task bar look (opaciti style etc)
You can search on google how to change the taskbar look on windows 10
It's already enable.Right click on desktop>Personalize>Color>Transparency on/off It may already be on if you have some transparency already, but it's worth a look. And here are some extreme ways https://www.howtogeek.com/258681/how-to-make-the-windows-10-taskbar-more-transparent/