More bullshit from Trump. Iran did hack into Trump's campaign in order to interfere in the elections. They sent the info to Biden's campaign staff who erased them as they were believed at that time to be spam emails. As usual Trump blows something out of proportion and wants Harris to "Resign". He is a comedian:

Iranian hackers sent stolen Trump campaign info to Biden campaign associates, FBI says
The Justice Department has said it plans to file criminal charges in connection with the hacking of Trump’s campaign.