can i unseal my boyfriend's birth reconds due to us having twins. To help find out if there is any health risk to him or our kids

He can petition the Court in the County where he was legally adopted to have a judge review his sealed file to see if there is any records that would shed light on any health risks.  This motion can be called different things but I would use a Motion for In Camera Unsealing of Sealed Adoption File for Health Reasons. If there are any records in the file that might be relevant to his search, those documents would be provided to him in redacted form. MRM