Using Chrome on macOS without address bar & menu like kiosk mode I just want a browser window without the address bar or any menu, with just one tab.

In Windows, chrome.exe --app=http://gmail.com is used. I want the macOS version for it.
It's basically the same thing in macOS. Provide the path to the Chrome binary and use the flags as normal, such as:

/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --app=https://gmail.com