If you simply need a lightweight, legal video editor that runs portably, consider (official, free version available) or Shotcut (open source, portable version exists).
For quick, on-the-go edits that don't require the full power of Premiere, tools like CapCut Desktop or Adobe Premiere Rush are designed to be lightweight and fast. Conclusion
The use of "portable" or "repacked" versions of Adobe Premiere Pro 64-bit refers to unauthorized, modified versions of the software designed to run without installation
Adobe Premiere Pro System Requirements: Smooth Video Editing
While the concept sounds like the perfect tool for the digital nomad, the reality of running a "Portable Repack" is fraught with technical caveats that can derail a project.
Adobe Premiere Pro "Portable Repacks" are unofficial, modified versions