Select the cells where you want the combined result to appear
Use a formula such as `=A1&B1`
Use a separator with `=A1&” “&B1` or `=A1&”, “&B1`
Press Enter
Copy the formula down for other rows if needed
Use `CONCAT` or `TEXTJOIN` if you want to combine more than two cells
Copy the result and paste as values if you want to replace formulas with text
Use Flash Fill if Excel can detect the pattern automatically