After seeing answers from others I am shocked no one used CONCAT as in the expected output the expected results is not two columns but a single column containing two values with space. Here is my answer, Any query improvement is appreciated.

and a count of the number of employees who have earned (which is ) as two space-separated values.

SET NOCOUNT ON;

SELECT CONCAT((salary*months)," ",count(salary*months)) FROM employee
WHERE (salary*months) = (SELECT MAX(salary*months) FROM employee)
GROUP BY (salary*months)

go

SELECT salary * months as earnings, COUNT(employee_id) FROM Employee GROUP BY earnings ORDER BY earnings DESC LIMIT 1;

select months*salary, count(months*salary) from Employee group by months*salary order by months*salary desc limit 1;

SELECT MAX(salary * months) as earnings, COUNT(employee_id)
FROM Employee WHERE salary * months = (SELECT MAX(salary * months) FROM Employee);

SELECT (salary * months) , COUNT(*)
FROM Employee GROUP BY (salary * months) ORDER BY (salary * months) DESC limit 1