How to edit the code in shortcode?

How do you change the code of shortcode? I’m using a plugin called WP Ultimate Reviews, and on this specific page I’m using the submit-review shortcode that let’s users submit their reviews. When you go to the actual website it says “Product name” at the top because you select what product you’re reviewing. I want it to change it to “Bus name” since I’m making a bus review site, however in the visual editor it doesn’t let me change that text, and in the code editor it just shows the shortcode, not a way to actually edit what’s in the shortcode.

Do you know how I would go about doing this, or is it something that’s specific to my plugin? Thanks!