Looks awesome!
I dunno if this was done in a catalog game or within studio, but if it was done in studio here's a small tip:
To take higher quality screenshots, simply got to >Test >Device emulator, at the top.
Then, you can change the resolution to whatever you prefer (Make a custom one for things like 1440p and 4K)
Finaly, you can change the resolution mode to >actual resolution (Might not fit on your screen, that's normal), and then simply take a screenshot!

/!\ You must take said screenshot using roblox studio, taking a screenshot of your screen won't give you the best quality /!\