I have a .slpk file.How can I convert the package file to point features?
have you made a scene layer yet?
Make Scene Layer (Data Management)—ArcGIS Pro | Documentation
Yes, but I still cannot export the scene layer to points
You could run the Extract Package (Data Management)—ArcGIS Pro | Documentation that will extract the contents of the scene layer package to a specified folder on disk. Is this what you're trying to accomplish?