A Ploom X Advanced session will last for 5 minutes with a standard Evo Tobacco Stick. And if you're wondering how many puffs you can take with Ploom X Advanced, you can take as many as you want. 

If you've got a Ploom S, your session length depends on which heating mode you chose. 

In Standard Mode your session will last 4 minutes and 30 seconds.
In Intense Mode, it'll last for 4 minutes. You can take as many puffs as you want - the number won't affect the length of your session.