I dont understand how to create the script of playbutton and exit button, when i look the video it was there, i know understand, in my project(assets) dont show any script. How i make the script? I know no start a script...
The script is probably in the next scene over. Sometimes Unity won't include scripts in the package unless it was used in the hierarchy. I would still recommend creating all the scripts from scratch. If you need help writing the script or feel stuck let me know.
