輔 is built from the 車 and 甫 components.
It reads ホ like 甫, as do 補, 捕, 浦, and 舗 — learn 甫 once and the family's reading comes with it.
A common word using 輔 is 大輔 (だゆう), meaning “vice-minister (Meiji period); undersecretary”.
Kanji that look similar include 漸, 撃, 暫, and 睡.