Command Prompt error need help fixing

It looks like you intended to use the Python REPL, so you need to run python (or possibly python.exe since you are on Windows). If it is already in the PATH, you can probably just invoke python or python.exe to bring up the Python REPL. Then things like 2+2 etc should work. You can also find online python REPLs generally (for example over at RepliIt: Python Online Compiler & Interpreter - Replit).

Here are the general docs on running Python on Windows: 4. Using Python on Windows — Python 3.10.5 documentation