Ass-salaam-alaikum-wa-rahmatullah
May Allaah accept your service for Quran!

i would like to know that what is ?
(Al-Khitamat)?

Jazaak Allaah-u-Khair

Answer

Wa alaikum assalaam wa rahmatullahi wa barakatuh,

Jazakum Allahu khairan and Ameen. 

When referring to the Glorious Qur’an, a  is complete reading of the Qur’an from Al-Faatihah to surah An-Nas.  The word  is the plural form, so it means more than two completions of the complete Qur’an. 

Wa assalaam