I have a 2019 MacBook Pro and this is about the first Mac I've worked with. The metal case above the keyboard gets extremely hot even when I'm not using the MacBook but have it on. Under normal and high loads that part of the case gets hot enough to burn if touched for about a second.
I can't tell if this is normal considering it doesn't seem to have a fan or a fan moving fast enough to be audible. I am almost wondering if it's intended and the Metal case is used to dissipate heat.