Dear @Office worker,
Thank you for posting your question in the Microsoft Q&A forum.
Excel does not offer a dedicated setting to adjust only the formula bar's font size. However, you can indirectly make formula text more readable by changing the default font size for your workbook, which also affects the formula bar. The formula bar is part of the Excel interface, not the worksheet content. Its font size is controlled by the application UI scaling, not by workbook font settings.
Go to File > Options > General tab > When creating new workbooks section > Font size dropdown menu > Select the font size that suits your preference from the list.
Or you can expand this bar to make it easier to view the entire formula, click the button I marked in the image.
Looking forward to your response!
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