There seem to not exist any official LabVIEW Drivers / VIs for MongoDB.

There do exist some LabVIEW VIs for MongoDB that work very well based on a C# DLL:
https://github.com/RBXSystems/mongo-labview-driver/tree/master/CSharp/bin.

However those only work with older MongoDB Versions and I can`t get them to work with Atlas and the most recent MongoDB Version 4.2, I guess the DLLs need to be updated (and depending on the changes of the API also some of the VIs)