This is the 10395th most frequent Russian word.
варят
"Варят" means "they boil" or "they cook (by boiling)."
The word 'варят' is used as a verb implying the ongoing action of cooking, or boiling, in the present tense.
Они варят суп каждый день.
They cook soup every day.
Here 'варит' (same verb root) is conjugated for the singular third person to describe a single cook performing the action.
Повар варит кашу на завтрак.
The cook is making porridge for breakfast.
The verb 'варите' is in the second person plural or formal singular form, used to politely ask someone about their ongoing cooking activity.