how to import word document in to sql server

No. But it isn't difficult:
1) Set up a field in your database to hold it: IMAGE is the one to go for as VARBINARY can only hold 8000 bytes.
2) Read the file, using File.ReadAllBytes[^]
3) Connect to your database, and write the bytes to it using a parametrized INSERT sql statement:

using (SqlCommand cmd = new SqlCommand("INSERT INTO MyTable (wordFile) VALUES (@DATA)", con))
   {
   cmd.Parameters.AddWithValue("@DATA", data);
   cmd.ExecuteNonQuery();
   }