Using marketplaceservice calls, you can get various bits of info about any item in-game, including its thumbnail, what type of item it is(hat, place, shirt, etc), its name, and its description all from its ID.
After a quick wiki dive, it seems that you can see a player's membership status, their name, and their profile picture from their userID, however there is no native way to call for their bio/profile description.
So my first thought was to use this as an excuse to learn how to use the HTMLService, so I did some more wiki diving, and apparently you can't actually call any Roblox domains with HTMLService.
So... What exactly are my options?

2 comments
To use HTTPService on Roblox.com, you'd have to use it on a proxy. Unfortunately I don't know of any that are still up right now. Good job doing your own research, though!
Try using rproxy.pw, it is what you use to get access to the ROBLOX website, E.G: http://rproxy.pw/users/1/profile is accessible by HTTP service