I am using Mac book pro Os X Yosemite ,I need t know How to change France store to USA store,please advice

On your Mac or PC

Clickto open iTunes and sign in to your Account Information, or use the steps below:

1. Open iTunes.
2. Click Sign In and enter your Apple ID.
   
3. Click your name, and select Account Info.
   
4. Enter your password again.

On the Account Information page:

1. To the right of Country/Region, click "Change Country or Region."
   
2. From the "Select a country or region" menu, select your new country. Learn what to do if you can't change your country.
3. Click Change.
4. On the Welcome to the iTunes Store page, click Continue.
5. Review the Terms and Conditions and Apple Privacy Policy. If you agree, select “I have read and agree to these terms and conditions.”
6. Click Agree.
7. Enter your payment method. Learn more about how to change or remove your Apple ID payment information.
8. Enter your billing address.
9. Click Continue.

Your Apple ID country updates for all of your Apple services on all of your Apple products.

Change your iTunes Store country or region - Apple Support

If you can’t change your iTunes Store country or region...

https://support.apple.com/en-us/HT204447