trigger LedTrigger on Lead (after insert,after update) {
    map<string, Lead> ObjMap = new map<string, Lead>();
    List<lead> leadList=new list<lead>();
    for(lead l:trigger.new){
        if(l.status==Active){
            ObjMap.put(l.LeadTerritory__c,l);
            //leadList.add(l);
        }
        List<Custom_Object> LeadR = [SELECT Id, QueueName__c, Territory__c
                        FROM Lead_Routing__c WHERE LeadTerritory__c IN :ObjMap.KeySet()];
        for(Lead ld:ObjMap.values()){
            if(LeadR.)
            ld.ownerid=
        }

    }
}

trigger LedTrigger on Lead (after insert,after update) {
    map<string, Lead> ObjMap = new map<string, Lead>();
    List<lead> leadList=new list<lead>();
    for(lead l:trigger.new){
        if(l.status==Active){
            ObjMap.put(l.LeadTerritory__c,l);
            //leadList.add(l);
        }
    }
    List<Custom_Object> LeadR = [SELECT Id, QueueName__c, Territory__c
                                FROM Lead_Routing__c
                                WHERE LeadTerritory__c IN :ObjMap.KeySet()];
    Group queueGrp = new  Group();
    if(!LeadR.isEmpty()){
         queueGrp = [Select Id from Group where Type = 'Queue' AND Name = : LeadR[0].QueueName__c LIMIT 1];
    }
    for(Lead ld:ObjMap.values()){
         if(queueGrp != null)){
             ld.ownerid=queueGrp.Id;
         }
    }
}