There are a few ways to add code to the head section of a Wix website. One of the easiest ways is to use the Wix Code feature. With Wix Code, you can create custom code that can be added to the head section of your website. Here’s how you can do it:
Go to the Wix Editor and select the “Dev Mode” button on the top right corner.
In the “Wix Code” panel on the left, select the “Triggers & Actions” option.
Click on the “+” button to create a new trigger, and choose the “Page Loaded” trigger.
Next, select the “+” button to add an action, and choose the “Custom Code” action.
In the custom code action, you can add the code you want to add to the head section of your website.
Once you’ve added your code, click on the “Save” button, and the code will be added to the head section of your website.
It’s important to note that you should test the code on a preview or staging version of your website before publishing it.

Another way to add code to the head section of your Wix website is by using the HTML iFrame/HTML code feature. This feature allows you to add an iFrame or HTML code to a specific area of your website.
Click on the “Add” button on the Wix Editor.
Select “More” and choose “HTML Code”.
Drag and drop the HTML Code element to the location you want to add the code.
Click on the “Enter Code” button and paste your code inside the text area.
Click “Apply” to save changes.

It’s important to note that this option is not recommended as it can cause some issues with website’s layout and it’s not recommended to add scripts in the iFrame.

In summary, you can add code to the head section of your Wix website by using the Wix Code feature or by adding an HTML iFrame/HTML code feature. It’s important to be cautious when adding code and make sure you test the code on a preview or staging version of your website before publishing it.