Hi RealGomer,
To determine almost anything about your operating system open Menu>System>PupSys-Info, then click one of the tabs. The Sys-specs>Distro Specs will tell you the Version, among other things.
Not having touched Fossapup64 in over a year it's likely you haven''t gone far from the stock version you first downloaded and installed. Menu>Setup>Quickpet --then I think update, I'm not currently running 64-9.5-- will install anything recommended.
Except for Web-browsers, that's really all you need to do. You could review the "Fossapup User Contributed Packages" Section for new applications or updated versions; and the "Fossapup Tips & Tricks" for possibly more recent advice. There's other things you could do but not easily. For example, you could swap kernels to a newer one. I don't think Quickpet offers any new applications; but you check to see if there's anything you want.
Web-browsers: IIRC, fossapup64-9.5 came with palemoon somewhere around version 28. You might be able to get away with that for some time. Websites are wary about allowing access to 'old-web-browsers' and more and more websites deny access to it, and palemoon in general. And updating the builtin version of palemoon, though possible, is more complicated than replacing it; that is leave it alone, obtain another web-browser, and use Menu>Setup>Default Application Chooser to set you new web-browser as the default.
For Web-Browsers, I strongly recommend MikeWalsh's portables. This page provides links to the all he's made available, https://www.forum.puppylinux.com/viewto ... 734#p48734. Read the specific instructions from the download link's page. But in general you don't install portables. You download the tar.gz/tar.xz, Right-Click then that select UExtract or pExtract from the pop-up menu, then move the extracted folder wherever you want: /mnt/home --the partition on which your puppy resides-- is a good location to conserve RAM. Some --palemoon, firefox, seamonkey-- will auto-update. Others --Google-Chrome, and Chromium-clones-- can be updated if you SFS-load the devx.sfs. All are self-contained: your book-marks, addons, settings and --especially important-- web-cache is written to the portable folder keeping it out of RAM.
Each as its advantages and disadvantages. Don't hesitate to ask questions about them.