SELECT a.*
FROM OPENROWSET('SQLNCLI11', 'SERVER=sqlserver.database.windows.net,1433;DATABASE=testDB;Uid=admin;Pwd=Fj'C(D=JJ&'XE6vx};','select * from table1 with (nolock)')a

declare @string varchar(max)
set @string=
'SELECT a.*
FROM OPENROWSET(''SQLNCLI11'', ''SERVER=sqlserver.database.windows.net,1433;DATABASE=testDB;Uid=admin;Pwd="Fj'''+'C(D=JJ&'''+'XE6vx}";'',''select count(*) from dbo.table1 with (nolock)'')a'

exec (@string)

declare @string varchar(max)
declare @pwd varchar(max)
set @pwd = 'Fj'''+'C(D=JJ&'''+'XE6vx}'
set @string=
'SELECT a.*
FROM OPENROWSET(''SQLNCLI11'', ''SERVER=sqlserver.database.windows.net,1433;DATABASE=testDB;Uid=admin;Pwd='+@pwd+';'',''select count(*) from dbo.table1 with (nolock)'')a'

exec (@string)