por alguna razón, Firebase devuelve promesa en lugar de valor

 let customer123 = db.collection('CustomerDatabase').get().then((snapshot) => { snapshot.forEach((doc) => { if(businessNameValue === doc.data().BusinessName){ let customerID = doc.data().CustomerID; console.log(customerID) // this is fine, i am able to ge the value. return customerID } }) }) console.log(customer123) //but this is giving me promise