Try this (no cursor):
DECLARE @tbl TABLE(id INT, [CurentStock] DECIMAL(8,2), UnitPrice DECIMAL(8,2))
INSERT INTO @tbl (id, [CurentStock], UnitPrice)
SELECT 16 AS id, 20.00 AS [CurentStock], 0.25 AS UnitPrice
UNION ALL SELECT 16, 120.00, 0.32
UNION ALL SELECT 16, 30.00, 0.35
SELECT 'total price: ' AS Descript, SUM(UnitPrice) AS [Value]
FROM @tbl
UNION ALL
SELECT 'count: ' AS Descript, COUNT(id) AS [Value]
FROM @tbl
UNION ALL
SELECT 'sum: ' AS Descript, SUM([CurentStock]) AS [Value]
FROM @tbl
UNION ALL
SELECT 'average: ' AS Descript, AVG([UnitPrice]) AS [Value]
FROM @tbl
Result:
total price: 0.92
count: 3.00
sum: 170.00
average: 0.31