Question about taxes ! Irs sent 60 day review letter (4464c)

Idk who else to ask. I’ve been researching and pretty much the only info I’ve got contradicts itself.

Most are saying it’s NOT an audit. A few say it is. Most are saying these are randomly being sent out and some are saying they’re only being sent out if you made a mistake or something flagged your return. Some are saying they got the letter, but then got their return. Some are saying this has happened to them before and they didn’t get a return until like September.

Apparently this is happening to a lot of people, and a lot of those filed through turbo tax.

So, I filed through turbo tax and got accepted like 30 minutes later. I did everything correct. Double checked. Tripp’s checked. Bc I’m paranoid.

On March 3 will be when the 21 days is up.

I got the review letter yesterday.

I’m sick thinking it’ll be months before I see my money.

I did already receive my state taxes like a week ago.

Anybody have personal experience with this