elAmericano665 Said:
"How do I get to iTunes: As in the title Im trying to open itunes but I get information that I need newest updates.. but I already have newest system update. When I try to download and install itunes app I get info I need 10.13 version of software...[...]"
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Getting iTunes Back:
Reinstall the macOS:
Go Here: How to Reinstall macOS from macOS Recovery - Apple Support. Important: Be certain to create a backup of your Mac prior to all of this. That way, you can have something to restore from the Mac from, should anything go wrong with the reinstall. Once reinstalled, try this once more. If that is too technical for you, then contact Apple Support.