Virtualcol has released an Embraer E170/175 pack for MSFS and it looks like both include United Livery.
vUAL has no shortage of routes for these planes!
Definitely not a study-level aircraft and it appears (from a review that I watched) that elements of the panel and the FMS are borrowed from other MSFS aircraft...
But depending on your exact needs, it could "get you in the game" as far as flying tubeliners for vUAL in MSFS...
https://www.flightsim.com/vbfs/content. ... -MSFS-2020
For what it's worth
ENJOY!