Yeah, that would be 24 cu yards at 2". One of those bags is about 1/20 cu yard. It’s typically cheaper to go bulk if you need more than a few bags, depending on delivery charge. For that size area, though, I’d consider if you even need to bring in outside soil. If there’s anything remotely resembling a lawn on it, the organic matter is probably decent, and it will just need to be broken up and raked. Or, you could do what I do and just overseed, getting a little better every year.
You could look into renting a power rake (depending on the current status of your area). We use one regularly on lawn installs if area is already relatively graded and decent soil, and just needs roughed up, then a quick pass with a landscape rake to do finish grade.