Is the txt file actually a CSV?
If so, there is an Import CSV action on the Excel VBO.
If not, the question becomes what is your expectation for what the txt file contents will look like in Excel.
It's pretty easy to just read the contents of a text file and then insert the entire contents into a cell in a worksheet.
You could also look at reading the contents of the txt file,
push that data into a BP Collection (ex. line by line) and then use the Write Collection action on the Excel VBO to write the contents of the Collection into a worksheet.
I'm sure there are various other methods.
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