if (AutoHighName(RFX_Name).isAutoHigh)
            {
                ClientRiskData.clientRiskCategory = Properties.Settings.Default.riskCategoryHigh;
                ClientRiskData.clientAutoHighReason = AutoHighReasonData.autoHighKey + " " + AutoHighReasonData.autoHighValue;
                ClientRiskData.clientNr = Nr;
                return ClientRiskData;
            }

        private AutoHigh AutoHighName(string RFX_Name)
        {
            if (autoHighName.Exists(kvp => kvp.Key == RFX_Name))
            {
                AutoHighReasonData.autoHighKey = RFX_Name;
                AutoHighReasonData.autoHighValue = autoName.First(kvp => kvp.Key == RFX_Name).Value;
                AutoHighReasonData.isAutoHigh = true;
                return AutoHighReasonData;
            }
            else
            {
                AutoHighReasonData.isAutoHigh = false;
                return AutoHighReasonData;
            }
        }

var checkedName = AutoHighName(RFX_Name, autoList);
if(checkedName.isAutoHigh)
{
    ClientRiskData.clientRiskCategory = Properties.Settings.Default.riskCategoryHigh;
    ClientRiskData.clientAutoHighReason = $"{checkedName.autoHighKey} {checkedName.autoHighValue}";
    ClientRiskData.clientNr = Nr;
    return ClientRiskData;
}

private AutoHigh AutoHighName(string key, Dictionary<string, ???> valueList)
{
    return valueList.ContainsKey(key) 
    ? new AutoHigh 
       {
            autoHighKey = key,
            autoHighValue = autoName[key]
            isAutoHigh = true,
        }
     : new AutoHigh { isAutoHigh = false };
}