Download and install Office setup via office.com/setup on your PC with following system requirements:
Computer and processor : 1.6 GHz or faster, 2-core for Windows and Intel processor for Mac
Memory : 4GB RAM or 2GB RAM (32-bit) for Windows and 4GB RAM for Mac
Hard Disk : 4.0 GB of free disk space for Windows and 10 GB of free disk space, HSF+ OS Extended or APFS for Mac
Display : 1280×768 screen resolution for Windows and 1280 x 800 screen resolution for Mac
Graphics : DirectX 9 or later, with WDDM 2.0 or higher (for Windows 10) and is not required for Mac
Operating System : Windows 10, 8.1, 7 Service Pack, Windows Server 2016, 2012 R2, 2012, or 2008 R2 for Windows and is supported in three most recent versions of Mac OS
Browser : The most recent version of Edge, Internet Explorer, Safari, Firefox, or Chrome.