People describe a wide range of emotions when they first get that hoped-for result. Relief is a near-universal. Exultation, giddiness, happiness. It's great if those are part of it too. For many, with the relief comes a sense of grief. It's the end of an era--your pre-licensure years. Any big milestone can bring a wistfulness along with the pride in the sense of progress. You're now wiser and older. You're now licensed. People also talk about some sense of loss or anger regarding the time spent preparing for the exam and the opportunities missed while preparing. Invitations turned down and the like.
Streamers don't fall from the ceiling when your PASS result comes in. There aren't cheers and flashing lights. You're still in that mundane space in front of that plain-old computer on a regular-ish day. If you want a celebration, you'll have to set the stage--not everyone gets what it means to get a social work license. Let people know what's what. Maybe they'll provide the cheers and flashing lights. Or maybe you'll put something together yourself. Or maybe flashing lights and cheering friends aren't your style. Whatever celebrating is to you, just know that this is something to celebrate. Complicated emotions aside, you're licensed! Mark the moment. This was a big one. You did it!