By default, we do not have a specific setting that will hide the View Source of your WordPress website. However, you ma use a 3rd party plugin that has the capabilities to hide the View Source of your site. The plugin is called Disabled Source, Disabled Right Click, and Content Protection. 

https://wordpress.org/plugins/disabled-source-disabled-right-click-and-content-protection/

Just to set your expectation, this plugin is a third-party plugin which we are not able to guarantee support and compatibility as we have not fully tested them. However, you are free to try.