Once you begin an unbonding-delegation, you can see it's information by using the following command:
secretcli q staking unbonding-delegation <delegator-address> <validator-operator-address>
Or if you want to check all your current unbonding-delegations with distinct validators:
secretcli q staking unbonding-delegations <delegator-address>
Additionally, you can get all the unbonding-delegations from a particular validator:
secretcli q staking unbonding-delegations-from <validator-operator-address>