The Media Creation Tool is a small executable file provided directly by Microsoft. Its primary function is to download the latest Windows 10 ISO file directly from Microsoft servers and write it to a USB flash drive or save it as an ISO file on your hard drive.
You will often see downloads labeled specifically for "64-bit." This refers to the tool itself, not just the OS it creates.
Click — the file will be MediaCreationTool22H2.exe (works for both 32 & 64-bit systems, but creates 64-bit media when chosen).