Arduino IDE issue

I was really fighting this one but I gotta ask for help here.. So I'm trying to prepare for Marlin 2.whatever. I've got the config files ready and changed what needs to be changed but when I verify It says I've got the wrong board. all the videos I've seen says to use "Mega 2560" board and processor but she crashes and says error..

I'm SURE this have been addressed already I tried to search for it lol... Please go easy on me :)

https://i.imgur.com/7VeXj1L.png