If it’s a real place you could request it here https://flightsim.to/requests/scenery
If you want something relatively basic it doesn’t take long, it’s the noodly details like car parks and fences that eats the time.
Let me know what it is and I’ll see if I’ve got time for it.
To do every inch of somewhere large from top to bottom is probably 50-70 hours.
A runway and a few buildings and not much more would be an hour or less.