Currently the Text() formatter doesn't have any way of defining a 'day' to be the 1st, 2nd, 3rd etc. without a large amount of coding in PowerApps.
Request to add them in as a formatter identifier so it can be formatted as such.
23 November 2019 or 23 isn't much use if I'm using it in a sentence. Example; "Please come back on the 1st of next month" as opposed to "Please come back on the 1 of next month"