The type of Form 1040 schedule you should use depends on the information you are trying to report.
Generally speaking, most taxpayers will need to use Schedule 1 for additional income and deductions, Schedule 2 for certain tax credits, and Schedule 3 for certain non-refundable credits.
You may also need to use other Schedules depending on your specific situation, such as if you’re filing jointly with a spouse or have self-employment income.
It is best to consult a qualified tax professional or review the instructions on the IRS website to determine which schedules are relevant for you.