Breakdown of Ça va ?
Questions & Answers about Ça va ?
Va is the il/elle/on form of the verb aller, which means to go.
Literally, ça va ? is something like Is it going? or Is that going?
But in real French, it is a very common expression used to ask how someone is doing.
So even though the literal grammar comes from aller, you should learn Ça va ? as a fixed everyday phrase.