A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
The formula bar shows the formula. That's what it's there for. You can edit the formula, select the whole contents of the formula bar and then hit F9. That will evaluate the formula in the formula bar and you will see the result of the formula there. But when you then hit Enter or use any other way to confirm the cell, the result will stay in the formula bar and the original formula will be overwritten. Typically, the F9 trick is used to troubleshoot formulas and after using it you'd hit Esc to return the cell to its original formula.
So, no, there is no way to do what you describe. The cell in the spreadsheet grid contains the result. If the result does not fully fit, you need to resize the cell to see it all. Some people have suggested an in-cell scroll bar, but that has not yet been implemented.
Don't shoot the messenger.