How do I change a cell so I can have the data it contains in seve.
 

Hello! I have a spreadsheet in Excel and have a lot of data in one of the
columns. How can I make each row taller, and change format so I can have
several rows of data in one cell?

If by make each row taller, and change format so I can have several
rows of data in one cell? you mean "make all the data in a single row
visible", then right-click the cell in question, select Format Cells,
the Alignment tab, and check the Wrap Text box.