What should I choose in the App Store Connect dialog “Does your app use encryption? Select Yes even if your app only uses the standard encryption within Apple’s operating system”?

We do not offer legally binding advice, but “No” must be indicated here in most cases. However, if HTTPS is used, an annual security report may have to be submitted to US authorities. More information about this can be found here: https://developer.apple.com/documentation/security/complying_with_encryption_export_regulations