Based on the filename "reaplugs236_x64-install", this refers to the standalone installer for the (specifically version 2.36, 64-bit). These are the VST plugins that come bundled with the REAPER DAW, made available for use in other digital audio workstations.
Make a note of this path, as you will need to point your DAW to this folder to recognize the plugins. 4. Select Components reaplugs 236 x64-install