variant of 最[zui4]
Phonosemantic compound. 宀 represents the meaning and 取 represents the sound. Based on the original meaning "gather". The meaning later shifted to "accumulate", "many" and "most". Originally written as 㝡. Later extra strokes were added to the 宀 component.
《說文》：“最，犯而取也。从冃，从取。”
gather