Depends exactly what you want to do the simple version is just have a mod or yourself type a command like !addburp or something to increment the counter up by one if you want that try this:
!addcom !addburp -a=!editcom !COMMAND_NAME @$(channel) has burped $(count) times.
!addcom !COMMAND_NAME @$(channel) has burped 0 times.
Note: COMMAND_NAME is the name of the command that your viewers will call on and should be changed.
If your looking to have a reset function on the counter then look here for help: https://community.nightdev.com/t/adding-a-command-that-adds-the-amount-specified-to-a-counter/22913/2