As far as I can see, the NDAA 2023, including the UAP amendment, has been passed by The Senate. Am I correct and what happens next? Does it still have to be signed by The President?

I think this answers my question but I had hoped they could do more than just "encourage".

"Burlison successfully passed an amendment in the House that encourages the government to renew Grusch’s security clearance, which would allow the former intelligence officer to share highly sensitive information in an ultra-secure facility known as a SCIF.

https://www.newsnationnow.com/vargasreports/congressman-ufo-whistleblower-david-grusch-questioning/