So i was on youtube and i saw this font they use and i asked them for the font about 5 months ago so far no one answer
https://www.youtube.com/watch?v=5W-rrEtJ2ZQ&list=WL&index=5&spfreload=10
here is the link to the video

DJB Lemon Head Blocked  Suggested by fonatica 


DJB Lemon Head Outlined  Suggested by fonatica 

Or