isanuki

<?xml version="1.0" encoding="UTF-8"?>
<CustomMetadata xmlns="http://soap.sforce.com/2006/04/metadata" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <description>カスタム選択リストのラベル01のレコードです。</description>
    <label>ラベル01</label>
    <values>
        <field>Code__c</field>
        <value xsi:type="xsd:string">P01</value>
    </values>
    <values>
        <field>DisplayNum__c</field>

isanuki

<?xml version="1.0" encoding="UTF-8"?>
<CustomMetadata xmlns="http://soap.sforce.com/2006/04/metadata" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <description>カスタム選択リストのラベル02のレコードです。</description>
    <label>ラベル02</label>
    <values>
        <field>Code__c</field>
        <value xsi:type="xsd:string">P02</value>
    </values>
    <values>
        <field>DisplayNum__c</field>

isanuki

<?xml version="1.0" encoding="UTF-8"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
    <types>
        <members>CustomPickList__mdt.Code__c</members>
        <members>CustomPickList__mdt.DisplayNum__c</members>
        <members>CustomPickList__mdt.LabelName__c</members>
        <name>CustomField</name>
    </types>
    <types>
        <members>CustomPickList.Value01</members>

isanuki

CustomPickList__mdt[] results = [SELECT LabelName__c FROM CustomPickList__mdt];
for(CustomPickList__mdt val : results){
    System.debug('ラベル名=' + val.LabelName__c);
}