To fetch the posts by post builder query use the db.post-builder.get_data shortcode

Examples:

1. basic query:

[arr.create set="module.db_params"]
  [post_type]event[/post_type]
  [posts_per_page]12[/posts_per_page]
[/arr.create]
[db.post-builder.get_data args="{module.db_params}" set="module.result_event" /]

2. Post Builder with single meta field:

[arr.create set="module.db_params"]
  [post_type]event[/post_type]
  [posts_per_page]12[/posts_per_page]
  [single_meta]
  	[event_end_time]
    	[value][php.date p1="Y-m-d g:i:s" /][/value]
  		[compare]>[/compare]
        [type]DATETIME[/type]
    [/event_end_time]
  [/single_meta]
[/arr.create]
[db.post-builder.get_data args="{module.db_params}" set="module.result_event" /]