This one is for Retrieving org metadata using packages

tasks.json

{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "SFDX: Retrieve Metadata From Package",
            "type": "shell",
            "command": "sfdx",
            "args": [
                "force:source:retrieve",
                "-n",
                "${input:packagename}"
            ],
            "group": "build",
            "presentation": {
                "reveal": "always",
                "panel": "shared"
            },
            "problemMatcher": []
        }
    ],
    "inputs": [
        {
            "id": "packagename",
            "description": "Enter Package Name:",
            "type": "promptString"
        },
    ]
}

thank you!