This happens because the Creation Kit is looking for the compiler in the wrong place. Here is the fix:
While scripts.zip itself is not needed for the game to run—since the uncompiled code has no effect on gameplay—it is indispensable for anyone wishing to create or modify game logic. Modders must ensure these files are unpacked into the correct directory for their specific version of the Creation Kit to avoid compilation failures. skyrim creation kit scripts.zip
Install the Creation Kit via Steam. Find the Source folder. Extract the .psc files. Fix the Papyrus Compiler path. Never download a random ZIP from the internet. This happens because the Creation Kit is looking
You have the scripts installed. Now what? Here is where the magic truly begins. skyrim creation kit scripts.zip