While there is no "free version" like there is for other entry-level software (such as RSLogix Micro Starter Lite), there are official ways to access it for testing or specific limited use-cases: Rockwell Automation Official Access Options Time-Limited Trials
If you need Studio 5000 professionally or for serious learning: studio 5000 logix designer download free
While there is of Studio 5000 Logix Designer available for public download , there are official ways to access it for evaluation or learning purposes. How to Access Studio 5000 While there is no "free version" like there