Hi,
I believe I would suit you quite well, I have made my own unity game, currently in early access on steam. All the data in my game is stored on the client as scriptable objects because it's a single player game so I actually haven't worked with fetching data from a webserver in unity. But I do have PHP and MySQL experience as my other game, which is a free browser game, is built in PHP and MySQL.
Feel free to check them out, you can see the links in my profile.
I just put 999 days in the estimated time because there's not much to go on, but I'm sure it would be just a few days.