Visitors to your website are used to being able to get to a homepage by clicking on the logo at the top of a web page. So it's important to add a link to your logo to your homepage in your header. Or you'll end up with some very frustrated website visitors and that's never a good thing.
Is your website on Wix? Here's how to add a hyperlink to a logo on Wix.
Go to your homepage
Click on the logo in the header at the top of the page
Click on the hyperlink symbol (it looks like two chain links)
Click "page"
Under "Which page" choose "Home (this)"
Click done
Click "Save" then "Publish" on the top right hand corner
Check it works on your live site