Can I send a Fax from my iPad?

There are (or used to be) services that would allow you to email a document to them and they would fax it. That's the only way I can think of to do this.

About six years ago, I needed to fax one document so, I signed up for the free one-week trial of one of these services, faxed my document then canceled the service.

Based on a quick search of the App Store, yes.

First one that showed: https://apps.apple.com/us/app/faxing-for-ipad/id428812959