Everyone is different when it comes to bowling. Everyone bowls at different speeds when it comes to bowling. I am the type of bowler that once I place my hands in the bowling ball, I walk to the foul line not wasting any time. Some people likes to stand there for a few seconds then roll the ball. That you play a part on how many games you can bowl in 1 hour.
The next factor is that can you get a strike every time you bowl will play on how many games you can bowl in 1 hour. Do you wipe the ball off after every throw? How high is your ball speed? Are you playing by yourself? These questions are the ones that will tell you on the number of games that will be played.
As for me, If I was bowling by myself for 1 whole hour, I can bowl7 to 8 games if I can do well. I think most people can do 5 if they keep moving.