swiftで発生しているエラー「Value of type 'Int' has no subscripts」

Question

前提・実現したいこと

UserDefaultsを利用し３次元配列を受け取り作業を行うプログラムを書きたいのですが、エラーが起きてしまいシミュレーションまで移れません。
回答いただけると幸いです。

エラーが起きている中で行いたい事象。
data[p][q][0]、data[p][q][1]の中身を加算してUserDefaultsから保存し直したい。

発生している問題・エラーメッセージ

エラーメッセージ
39行目
Definition conflicts with previous value
Type annotation missing in pattern
Value of type 'Int' has no subscripts

41行目
Type annotation missing in pattern
Value of type 'Int' has no subscripts

該当のソースコード

import UIKit



class RecordDo: UIViewController,UIPickerViewDelegate,UIPickerViewDataSource {
    
    @IBOutlet weak var chara1select: UIPickerView!
    @IBOutlet weak var chara2select: UIPickerView!
    @IBOutlet weak var resultselect: UIPickerView!
    
    var twoDimArray = [[String]]()
    
    var data: [[[Int]]] = [[[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0]]]
    
    let sampledata: [[[Int]]] = [[[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0]], [[0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0], [0, 0]]]
    
    
    var ans = ["", "", ""]
    var trueans = [0, 0, 0]

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let userDefaults = UserDefaults.standard
        let data: [[[Int]]] = userDefaults.array(forKey: "SSB_DATA") as! [[[Int]]]
        
        let p:Int = trueans[0]
        let q:Int = trueans[1]
        let r:Int = data[p][q][0]
        
        let data;[p][q][0] = r
        if trueans[2] == 0 {
            let data;[p][q][1] = 1
        }
        
        chara1select.delegate = self
        chara1select.dataSource = self
        
        chara2select.delegate = self
        chara2select.dataSource = self
        
        resultselect.delegate = self
        resultselect.dataSource = self
        
        
        for _ in 0 ... 2{
            twoDimArray.append([])
        }
        twoDimArray[0] = ["A","B","C","D","E","F","G","H","I","J","K","L"]
        twoDimArray[1] = ["A","B","C","D","E","F","G","H","I","J","K","L"]
        twoDimArray[2] = ["勝ち","負け"]

        // Do any additional setup after loading the view.
        chara1Label.text = "使用したキャラクター"
        chara2Label.text = "対戦相手のキャラクター"
        resultLabel.text = "勝敗"
        
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return twoDimArray[pickerView.tag].count
    }
    
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        
        return twoDimArray[pickerView.tag][row]
        
    }

    func pickerView(_ pickerView: UIPickerView,
                    didSelectRow row: Int,
                    inComponent component: Int) {
        if pickerView.tag == 0 {
            ans[0] = twoDimArray[0][row]
        } else if pickerView.tag == 1 {
            ans[1] = twoDimArray[1][row]
        } else if pickerView.tag == 2 {
            ans[2] = twoDimArray[2][row]
        }
        
        for i in 0..<2 {
            for j in 0..<12 {
                if ans[i] == twoDimArray[0][j] {
                    trueans[i] = j
                }
            }
        }
        
        if ans[2] == "勝ち" {
            trueans[2] = 0;
        } else {
            trueans[2] = 1;
        }
        
        test.text = "(trueans[0]) : (trueans[1]) : (trueans[2])"
    }
    
    @IBOutlet weak var chara1Label: UILabel!
    @IBOutlet weak var chara2Label: UILabel!
    @IBOutlet weak var resultLabel: UILabel!
    
    

    @IBOutlet weak var test: UILabel!
    
    @IBAction func moveRecordResult(_ sender: Any) {
        
        
        userDefaults.set(data, forKey: "SSB_DATA")
        userDefaults.synchronize()
    }
    
}

試したこと

解説サイトなどを巡ってみたのですが理解が追いつかずエラーを直すことができませんでした。

補足情報（FW/ツールのバージョンなど）

Xcode12
swift5.1使用。

Answer 1

        let data;[p][q][0] = r
        if trueans[2] == 0 {
            let data;[p][q][1] = 1
        }

ここは

        data[p][q][0] = r
        if trueans[2] == 0 {
            data[p][q][1] = 1
        }

の間違いでしょうか。

let と ; が余分だと思います。