USCIS is working on your case. Nothing is needed from you right now.
What it means
This is the ordinary waiting state. Your case is in the queue and USCIS has not asked you for anything. It is by far the most common status, and it can stay this way for months without meaning anything is wrong.
What happens next
Keep your address current with USCIS and watch for mail. There is nothing to submit while a case sits here.
Official USCIS wording
As of September 9, 2025, USCIS is still processing your Form I-485, Application to Register Permanent Residence or Adjust Status, Receipt Number XXXXXXXXXXXXX. We do not currently need anything from you but will contact you if we need additional information regarding your case. If you move, go to www.uscis.gov/addresschange to give us your new mailing address.