how do i get my iphone to show up in itunes or on my mac?

Hello syndicate138,

Thank you for using Apple Support Communities.

I understand that you are having issues accessing the iTunes Store and not being recognized by your Mac.

First you can take a look at this support article to address issues with connecting to the iTunes Store:

If you can't connect to the App Store, iTunes Store, or other Apple services - Apple Support

For issues with the iPhone not being recognized by your Mac, this is the article for you to take a look at:

If your computer doesn't recognize your iPhone, iPad, or iPod - Apple Support

Best regards.