Did you efile? Was it Accepted? Did you go all the way through the File tab, through the 3 steps and hit the big orange Transmit Returns Now button? Maybe you didn’t finish filing it or it rejected or you were suppose to mail it. When you log into your account you should also see the status and if it was Accepted or Rejected, Started, Printed, Ready to Mail, etc. What does it say?
Check back though your emails. When you efile you get back 2 emails. The first email only confirms the transmission. The second email says if the IRS (or state) Accepted or Rejected your efile. If you efiled there should be an Electronic Postmark page. Probably near the end. That is your proof and signature.
2024 AGI
You need your 2024 AGI to efile 2025. The AGI is on 2024 1040 or 1040SR line 11. If you filed a Joint return you use the same AGI for each spouse.
How to find the AGI.
https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947
If you didn't file 2024 or filed it later in the year or mailed it, then try entering 0 for the AGI. If that doesn't work you will have to print and mail your return.
Or request a transcript from the IRS
https://www.irs.gov/individuals/get-transcript
