How to insert an event into a page

you can use shortcode [event event=”x”] where x is the event id

[event event="123"]My selected event is called #_EVENTNAME[/event]

https://wp-events-plugin.com/documentation/shortcodes/

thanks but How do I find the even id

You should see it listed under Events > Events. If you don’t, click Screen Options towards the top right of the screen and make sure Event ID is checked.