How can I add a custom Javascript snippet to display my feedback in footer?

I have the following Javascript snippet:

<script type="text/javascript" src="<script type="text/javascript" src="//"></script><div id="auction-nudge-feedback" class="auction-nudge"></div>

Which should dynamically display my eBay feedback like this:

How can I add this to my wordpress site? I tried installing the ‘ Header and Footer Scripts ‘ plugin to no avail. I’m sure it’s simple but I’m a beginner when it comes to anything web dev related.

It doesn’t need to be displayed in the footer. It can be within the body. I’ve asked around and I couldn’t find anyone that could help so I thought I’d try here. Thanks.

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Author: Chrome123