It seems you are trying to block and delete a file, but also mentioned forgetting your password on an Oppo Reno 13F 5G device. For blocking and deleting files, you can use Microsoft Defender features if your organization uses it. You can stop and quarantine files to prevent further issues. However, for resetting your device passcode, you would need to follow the specific steps for Android devices, which involve removing the existing passcode and setting a temporary one.
If you need to reset your passcode, you can refer to the instructions provided by your organization or use the Company Portal app.
References: