If you filed taxes for 2018 or 2019 and made $75,000 or less ($150,000 or less for a couple, combined), you should be expecting a $1,200 check. If you have kids, you'll also get paid an additional $500 per child. There are stipulations for that as well, and you can get all that information from Vox, they have a nice breakdown.

Now, if you haven't yet received your money, you can track it. Today (Wednesday, April 15, 2020) the IRS launched a tracker tool for you to check the status of your payment. You can find out why you don't currently see it in your account, and even provide necessary information to get your check. You can learn the status of your stimulus check here.