If you plan on using the Skyrim Script Extender (SKSE) or any major mods like SkyUI, having version 1.9.32.0.8 is mandatory. Most "Oldrim" mods were built specifically for this executable. Using an older version will often result in a "CTD" (Crash to Desktop) or a notification that your game version is incompatible with your scripts. How to Download and Update

is the final official update released by Bethesda for the original version of The Elder Scrolls V: Skyrim

Resolved issues where standard quest items became permanently stuck in inventory slots.

Are you trying to install that require this version? Are you getting an error message when you try to launch?

Released by Bethesda as the final official title update for the original 32-bit version of Skyrim (often referred to as Skyrim Legendary Edition or Oldrim), version 1.9.32.0.8 is the bedrock of the game’s modern modding ecosystem. It is not just an incremental update; it represents the culmination of years of engine optimization and bug tracking.

"Skills of 100 can be made Legendary. This will reset the skill to 15, return its Perks and allow the skill to affect leveling again. This effectively removes the overall level cap."