Split labels from multiple fields to multiple lines in ArcMap

https://support.esri.com/en-us/knowledge-base/how-to-split-labels-from-multiple-fields-to-multiple-li-000017012

For Python:

[Field1] + "\r\n" + [Field2]


For VBScript:

[Field1] & vbnewline & [Field2]


For JScript:

[Field1] + "\n" + [Field2]