Promise.all map

  
const arr = {};  
  
await Promise.all(  
  UsersQuery.map(async function (data) {  
    const city = await db.sequelize.query(`  
      select * from city  
    `,   
      type: db.sequelize.QueryTypes.SELECT   
    });  
  
    arr[data.user_id] = city[0].name;  
  
  })  
}  
  
  
UsersQuery.forEach(async function (data, index) {  
  this[index].name = arr[data.user_id];  
}, UsersQuery);