Tax Exemption for Nonprofit organizations

We are other end users, here for mutual tech help, and neither Apple nor taxing authorities. You'll need to contact Apple directly. They will not see you question in this setting.

If your organization routinely does business directly with Apple, someone at your end should have the appropriate contact information to reach the proper Apple department.

I find nothing on CRS numbers in searching Apple support.

Most likely from your state taxing authority.