The heart represents thoughts and attitudes. Setting it right represents correcting it. Alternate translation: "if you correct your attitude" (See: [[rc://en/ta/man/translate/figs-metaphor]])
This is a symbolic action representing asking God for help. Zophar asks Job to consider what will happen if he sets his heart right. Alternate translation: "and make an appeal and pray to God" (See: [[rc://en/ta/man/translate/translate-symaction]])