Database
[{"replies":{"abcdefgh4343daj":{date:ISODate("2022-07-27T14:47:10.025Z"),},"1235fsedfseaww":{date:ISODate("2022-06-27T14:47:10.025Z"),},"u89ues89fes8fse":{date:ISODate("2022-08-27T14:47:10.025Z"),},}}]
Query
db.collection.aggregate([{"$project":{"data":{"$objectToArray":"$replies"}}},{$unwind:"$data"},{$match:{"$expr":{"$lte":["$v.date",ISODate("2022-07-28T14:47:10.025Z")]}}}])