My Macbook Pro (13" 2020) has an unusual stain on its screen.

I've only had the computer for just under a week and I didn't notice an issue until about a couple of hours ago. At first I thought it must be a smudge or a stain and attempted to wipe it off with a microfibre lens cloth, but it had no effect and upon closer inspection almost seems to be internal. It's not at all visible when my screen is white/active unless I deliberately catch it with the light, but it's very visible when the screen is dark/asleep.

I've been ultra-delicate with this machine since its purchase and have actually used it pretty sparingly so I can't think of any physical reason why this would have happened. I was considering taking it into the nearest apple Service Provider, but I thought I'd check here first to see if anybody is familiar with the issue.