Grabbing a string from Google Sheets to Roblox SurfaceGUI Text

Totally possible; you’d just need to combine the HttpService on your game with the Google Sheets API.
Heres an older forum post describing the process in depth:

Heres some additional references which might be useful:
Google sheets API REST Reference sheet (Useful for constructing your http requests)
Roblox API HttpService:RequestAsync() Method (Roblox side of things)