Today Bluehole announced that they're working on a feature for PUBG to let players select map when queing up for a match. Right now if you join the match queue you will just get to play a random level. This feature is a good addition to the game, especially when more maps are on it's way.
The announcement was made on the game's Steam Community page and this screenshot was attached showing an early version of the feature:
Bluehole made clear that the UI may not represent how it's gonna look in the final release, but they can safely say that it will work like this:
The feature is almost complete and will soon after completion be released on the test servers.