I am trying using the Self employed to do my taxes. I need to put my AGI as 0 for 2020 since last years return has not been processed. I cannot find the option anywhere.

I cannot find the option anywhere on the self employment software. I am hesitant to pay or go any further because I cannot find the option to even enter in 2020s AGI anywhere. Does anyone know how to find this or do this? I just need to put in a 0 is all since it still has not processed yet.