A family of Microsoft word processing software products for creating web, email, and print documents.
What version of macOS are you running? Monterey is now the oldest version on which you can run Office. If your system can only run an older operating system, you can still use Word for the web, or Google Docs. For desktop programs, you can install open-source LibreOffice, which has good compatibility with Office file formats. Here's my article with more details: Most Recent Office You Can Run - Best Practices