How use call out stored session values as dynamic binding

During login, I had some session parameters set such as current user name and id using the action SET SESSION VALUE. I also have a session parameter that I had saved using php code. How can I get those session values to populate in my webpages such as in field inputs, or just as a dynamic binding within my pages? I saw videos on how to dynamically set the values using the session manager app, but I could not find one on how to recall those session values.