Database
[{"Sales":[{"Action":["Approved"],"Log":["Created on: 04/20/2020 42:04:04"]},{"Action":["Approve","Decline","Edit","Remarks"],"Log":["Created on: 04/20/2020 42:04:04"]},{"Action":["Approve","Decline","Edit","Remarks"],"Log":["Created on: 04/21/2020 412:04:04"]},{"Action":["Approve","Decline","Edit","Remarks"],"Log":["Created on: 04/21/2020 412:04:04"]},{"Action":["Approve","Decline","Edit","Remarks"],"Log":["Created on: 04/23/2020 44:04:04"]}]}]
Query
db.collection.aggregate({$addFields:{Sales:{$filter:{input:"$Sales",cond:{$in:["Approved","$$this.Action"]}}}}})