Software Requirement For Mac users:
10.11 El Capitan
10.13 High Sierra
Are you not sure whether iTunes recognizes your iPhone, iPad, or iPod or not? Please check this guide https://support.apple.com/en-us/HT204095
Software Requirement For Windows users:
Windows 10 users who have downloaded and installed iTunes from the Microsoft Store are facing “Application Error: iTunes required” such error oftenly. You should reinstall iTunes to fix this error. Read guide how to fix it here.