You can't.
MS stopped support in 2005 for Internet Explorer.
If you were running a virtual machine with Windows could you download Explorer for your Mac.
Download Modern Ie For Mac
If you are looking for browsers for the Mac besides Safari, consider Firefox, Brave, Opera, or Sea Monkey.
Modernie Mac
Download JavaScript Browser - Built using JavaScript, this lightweight web browser ensures fast navigation, aiming to be a demo of Windows 10's web platform potential. Modern.IE VM Installer v0.1.3. AppleScript to install modern.IE VMs with one click in VirtualBox for Mac. Make sure VirtualBox and Growl 2 are installed on your Mac. (Growl is only used to provide progress notifications; the script might work without it.) Download and extract the ZIP file containing the application. Double click the.
Internet Explorer 11 Download Mac
I just searched and saw this article, it might be of help
Modernie
If you are trying to reach a particular website that calls for IE, go into Preferences in Safari, go to Develop menu, select User Agent and select Internet Explorer 11. See if the website that you are trying to reach handles that.