Oh my god so many red flags.
1. Downloading a .rar file (an archive file) is a big red flag (.zip would be more logical, but see 2) )
2. Downloading and executing a zipped archive file is never advisable, unless from a totally trustworthy source (and even then, think twice).
3. Disabling Defender Antivirus as a suggestion is ridiculous and the hallmark of a scam
4. I bet you that Partner Support link does not lead to Walmart, nor does the "Walmart Brand Portal Download" button link. Easy to inspect by hovering over it and doing something like "copy hyperlink", then pasting it into a text editor.
Net, burn this email.