Where can i get timer like kz_frew(left side)?

He uses a program called Livesplit, you need to add it as a window capture to OBS (open broadcaster software), or any other streaming software, and then use a chroma key to make the background of Livesplit transparent. After that you can add a background, and you can also color/restyle your splits using the Livesplit settings.

Thank you very much.