"not much cop" meaning in English

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      "expansion": "not much cop (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
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      "examples": [
        {
          "ref": "1971, David Bowie, Kooks",
          "text": "'Cause I'm not much cop at punching other people's Dads",
          "type": "quotation"
        },
        {
          "ref": "1997, Jonathan Romney, Short Orders: Film Writing",
          "text": "This one-dimensionality makes Germinal a formidable national monument, but not much cop as a film.",
          "type": "quotation"
        },
        {
          "ref": "2003, Anna Jacobs, Our Lizzie",
          "text": "Not much cop, this place, but I have to keep an eye out for my train. Now, what can I get you, miss?",
          "type": "quotation"
        },
        {
          "ref": "2007, Jacqueline Wilson, Candyfloss",
          "text": "\"I'm not much cop at the decorating lark, am I, Floss?\" \"Never mind, Dad.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Not very good; unimpressive."
      ],
      "id": "en-not_much_cop-en-adj-TELFEcbx",
      "links": [
        [
          "unimpressive",
          "unimpressive"
        ]
      ],
      "raw_glosses": [
        "(British, slang) Not very good; unimpressive."
      ],
      "related": [
        {
          "word": "not much chop"
        }
      ],
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        "British",
        "not-comparable",
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      "tags": [
        "Australia"
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      "text": "Audio (AU)"
    }
  ],
  "word": "not much cop"
}

{
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      "args": {
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      "expansion": "not much cop (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "not much chop"
    }
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      "examples": [
        {
          "ref": "1971, David Bowie, Kooks",
          "text": "'Cause I'm not much cop at punching other people's Dads",
          "type": "quotation"
        },
        {
          "ref": "1997, Jonathan Romney, Short Orders: Film Writing",
          "text": "This one-dimensionality makes Germinal a formidable national monument, but not much cop as a film.",
          "type": "quotation"
        },
        {
          "ref": "2003, Anna Jacobs, Our Lizzie",
          "text": "Not much cop, this place, but I have to keep an eye out for my train. Now, what can I get you, miss?",
          "type": "quotation"
        },
        {
          "ref": "2007, Jacqueline Wilson, Candyfloss",
          "text": "\"I'm not much cop at the decorating lark, am I, Floss?\" \"Never mind, Dad.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Not very good; unimpressive."
      ],
      "links": [
        [
          "unimpressive",
          "unimpressive"
        ]
      ],
      "raw_glosses": [
        "(British, slang) Not very good; unimpressive."
      ],
      "tags": [
        "British",
        "not-comparable",
        "slang"
      ]
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  "sounds": [
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  "word": "not much cop"
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