Host title is based on two factors: the number of live shows and the number of received PodPoints per month. For example, the host should have 12+ live shows and receive 72,000+ PodPoints each month to get the Gold Medal. This is done on a monthly basis. So, your statistics for the past month will determine your title for the next month.
Overview of Host Titles and Associated Privileges (details below):
*For Unlimited Plus Plan hosts, the listener limit is 500.
Host level is based on your engagement score. The higher engagement score you get, the higher level you are. For those hosts with a higher level, they are more likely to be featured on the live list. (You can go to Stats to check your host title and host level.)