July 10th 2024 I was awarded temporary custody of our children. She filed first but apparently made up a W2 to beat me what form do I fill out to obtain 2024 full tax?

I was awarded full custody on April 1st 2025 of all 4 children when I went to a tax prep near me and they ran their socials they said that there is a return in progress with certain IRS codes that they couldn’t fully disclose to me.