Find Status or percentage completed of any DBCC Shrink Databse files

1.First try to find the space used and empty space left in databases

SET NOCOUNT ON

DBCC UPDATEUSAGE(0)

-- DB size.
EXEC sp_spaceused

 --- Table row counts and sizes.
CREATE TABLE #t
(
    [name] NVARCHAR(128),
    [rows] CHAR(11),
    reserved VARCHAR(18),
    data VARCHAR(18),
    index_size VARCHAR(18),
    unused VARCHAR(18)
)

INSERT #t EXEC sp_msForEachTable 'EXEC sp_spaceused ''?'''

SELECT *
FROM   #t

-- # of rows.
SELECT SUM(CAST([rows] AS int)) AS [rows]
FROM   #t

DROP TABLE #t

2. Find the Status or percentage completed of any DBCC Shrink Databse files with below query

SELECT
    percent_complete,
    start_time,
    status,
    command,
    estimated_completion_time,
    cpu_time,
    total_elapsed_time
FROM
    sys.dm_exec_requests
WHERE
    command = 'DbccFilesCompact'