Completely wild guess based on where it is and what it looks like? For flat towing the Jeep behind another vehicle like an RV.
And a little quick google seems to confirm that: https://www.amazon.com/Replace-Compatible-Wrangler-Unlimited-Standard/dp/B09KLJMS6P/ref=sr_1_25?keywords=tow+bar+for+jeep+wrangler&qid=1656195837&sr=8-25
I have this one on my 2017 WT, it works fine and wasn't terrible to install: https://smile.amazon.com/gp/product/B0844FSNRQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 (shouldn't be an affiliate link or anything, but if you haven't set up Amazon Smile I recommend St. Jude)
Hahaha... no. Who would be so stupid to think that's a gas filler accessory? FYI, it is a hitch, not a tow bar.
In any case, the hitch would not be a gas filler accessory, as the gas filler is in the left quarter panel, not under the license plate. Take a look. See what I'm talking about now?