TRUNCATE TABLE TestDatabase.dbo.myWidechar; -- for testing
BULK INSERT TestDatabase.dbo.myWidechar
   FROM 'D:\BCP\myWidechar.bcp'
   WITH (
        FORMATFILE = 'D:\BCP\myWidechar.fmt'
        );

-- review results
SELECT * FROM TestDatabase.dbo.myWidechar;

https://docs.microsoft.com/en-us/sql/relational-databases/import-export/use-unicode-character-format-to-import-or-export-data-sql-server

https://blogs.msdn.microsoft.com/joaol/2008/11/27/bulk-insert-using-unicode-data-files/