I am trying to display a msg when number of records in the list is 0.

but it is displaying on page load.

here is the code.

Public class Mycontroller {
   
    String searchText;
    List<Account> results;
    List<Case> Score = new List<Case>();
    String SetAcc;
    List<FeedBack__c> fback ;
       
    Public string getSearchtext(){
        return searchText;
        }
   
     Public PageReference doSearch () {
        results = (List<Account>) [FIND :searchtext RETURNING Account(ID, Name, Account_type__C)][0];
        return null;
        }
   
       
    Public void setSearchText (String s) {
        searchtext = s;
        }
   
    Public List<Account> getResults() {
        return results;
        }
   
    Public List<Case> getScore() {
        Score = [select Account.Name, casenumber, Solution_Type__C, ClosedDate, Priority from case where Account.ID = :ApexPages.currentPage().getParameters().get('aid') and status = 'Closed' limit 10];
        if (Score.size() == 0 ){               
                ApexPages.addmessage(new ApexPages.message(ApexPages.severity.info,'No Records Found'));
                return null;
                }
        return Score;
        }      
  
   
    Public List<Feedback__c> getfback() {
        fback = [select Case__c, TAM__c, Account__c, Score__c from feedback__c where Account__c = :ApexPages.currentPage().getParameters().get('aid')];
        return fback;
        }
 
  }

Still learning , any help is appreciated