Only the first and second Stimulus payments go on your 2020 return. The 3rd EIP3 will come separately. If you didn't get EIP1 or EIP2 or qualify for more it should be on your 2020 return line 30.
Generally, if you have adjusted gross income up to $75,000 for individuals and up to $150,000 for married couples filing joint returns and surviving spouses, you will receive the full amount of the recovery rebate. For filers with income above those amounts, the payment amount is reduced.
