how to get value from dictionary in unity code example

Example: unity dictionary get value

if (!haveMisionsAsigned && gameRecord.searchedArea == null)
        {
            for (int i = 0; i < areaArray.Length; i++)
            {
                if (gameRecord.availableAreas[areaArray[i]])
                {
                    gameRecord.misionsAsigned.Add(misionController.AssignMision("Busqueda", areaArray[i]), areaArray[i].localizations[Random.Range(0,areaArray[i].localizations.Length)].transform);
                }
            }
        }
        else if (!haveMisionsAsigned && gameRecord.searchedArea != null)
        {
            for (int i = 0; i < 3; i++)
            {
                gameRecord.misionsAsigned.Add(misionController.AssignMision(misionTypeArray[Random.Range(0, misionTypeArray.Length)], gameRecord.searchedArea), gameRecord.searchedArea.localizations[Random.Range(0,gameRecord.searchedArea.localizations.Length)].transform);
            }
        }
        if (!gameRecord.estaEnMarxaUnaMisio)
        {
           //Get the mision info from dictionary (like mision.misiondescription) to add it in a funcionality of a button
        }