robloxpath.bat

@echo off
for /F "skip=2 tokens=3*" %%A in ('reg query "HKCU\Software\ROBLOX Corporation\Environments\roblox-player" /ve') DO (set robloxpath=%%A)
setlocal DisableDelayedExpansion
set splitter=\RobloxPlayerLauncher.exe
setlocal EnableDelayedExpansion

set LF=^


rem ** Two empty lines are required
for %%L in ("!LF!") DO (
	for /f "delims=" %%R in ("!splitter!") do ( 
		set "var=!robloxpath:%%R=%%L!"
	)
)

echo %var%