I’ve compiled a handful of resources for what you’ll need on Unreal’s side, however setting up a database and an API are another portion of this not gone over below.
If you’re a fan of text based tutorials, this community article is good for getting started:
Alternatively you can learn how to make HTTPS requests to a server from this article about calling to an API and taking an image and some data sent back and applying it in game materials:
If you’re more of a video learner, this might be a bit better for the same use:
And as always, the documentation area you’ll be using to make those requests:
Disclaimer: One or more of these links are unaffiliated with Epic Games. Epic Games is not liable for anything that may occur outside of this Unreal Engine domain. Please exercise your best judgment when following links outside of the forums.