...
 select new
                                            {
                                                u.ID,
                                                u.SettingsID,
                                                u.Value,
                                                string.Format("s.SettinsName_{0}", language)   /*Это для примера !!*/
                                            };

 object getval(object r, string n)
        {
            System.Reflection.PropertyInfo prop = r.GetType().GetProperty(n);
            if (prop != null)
                return prop.GetValue(r, null);
            return n;
        }

 var setting_name = sso.meta_Settings.Where(x => x.SettingsID == us.SettingsID).Select(string.Format("new (SettingsName_{0} as Name)", language));

setting_name.GetType() 

System.Data.Entity.Infrastructure.DbQuery`1[DynamicClass1]