I need to empty out my credit balance.

Hi faruk085,

Welcome to the Apple Community.

Apple support have an article online that may help.

What you can buy with your Apple ID balance

https://support.apple.com/en-us/HT211187

Or

If there is only a small amount of credit in your account,

you can ask Apple Support to make it zero.

To contact Apple in your country or region:

https://support.apple.com/en-au/HT201232

Hope this helps :-)