That file name looks like an "All-in-One" (AiO) update package for , specifically bringing the game to version 1.5.62.0 .
: Even today, many players use "Downgrade Patchers" to move their game back from the latest version to 1.5.x just to ensure their favorite older mods continue to function perfectly. Skyrim.Special.Edition.Update.v1.5.62.0.AiO.7z.rar
: Before the "Anniversary Edition" (v1.6+) updates started frequently breaking plugin compatibility, 1.5.62 was a "sweet spot" for large load orders. That file name looks like an "All-in-One" (AiO)
: Version 1.5.62 was a long-standing stable build for the Skyrim Script Extender (SKSE64). Many classic and essential mods were built specifically for the 1.5.x "Pre-Anniversary Edition" era. : Version 1
Are you looking to your current game for mod compatibility, or are you trying to fix a specific error with your current setup?