umarım yapmak istediğini doğru anlamışımdır.
<div class="form-group row IslemlerGroup">
<div class="col-sm-3">
<select name="parca[]" class="form-control fill selecTor">
            <option value="0">Parça Seçin</option>
            <?php foreach ($parcalar as $key => $parca) { ?>
            <option value="<?=$parca['id']; ?>" data-ucret="<?=$parca['ucret'];?>"><?=$parca['parca']; ?></option>
            <?php } ?>
        </select>
</div>
<div class="col-sm-3">
<input type="text" name="islem_ucret[]" class="form-control" placeholder="Ücret" pattern="d">
</div>
<div class="col-sm-5">
<input type="text" name="islem_aciklama[]" class="form-control" placeholder="Açıklama">
</div>
<div class="col-sm-1">
<button class="btn btn-mat waves-effect waves-light btn-success btn-sm GelirCogaltBtn">Ekle</button>
</div>
</div>

<div class="form-group IslemlerGroupKopya" style="display: none;">
<form class="row" id="tempForm">
        <div class="row">
            <div class="col-sm-3">
                <select name="parca[]" class="form-control fill selecTor">
                    <option value="0">Parça Seçin</option>
                    <?php foreach ($parcalar as $key => $parca) { ?>
                    <option value="<?=$parca['id']; ?>" data-ucret="<?=$parca['ucret'];?>"><?=$parca['parca']; ?></option>
                    <?php } ?>
                </select>
            </div>
            <div class="col-sm-3">
                <input type="text" name="islem_ucret[]" class="form-control" placeholder="Ücret" pattern="d">
            </div>
            <div class="col-sm-5">
                <input type="text" name="islem_aciklama[]" class="form-control" placeholder="Açıklama">
            </div>
            <div class="col-sm-1">
                <button class="btn btn-mat waves-effect waves-light btn-danger btn-sm remove">Sil</button>
            </div>
</div>
</form>
</div>
<div class="IslemlerWrap"><!--buraya islemler--></div>
$(document).ready(function(){
    $('body').on('change','.selecTor',function(){
        if($(this).val()>0){
            $(this).parents('.row').find('input[name="islem_ucret[]"]').val($('option:selected', this).attr('data-ucret'));
        }
    });
    
    var maxGroup = 1000;
    $('.GelirCogaltBtn').click(function(){
        if($('.selecTorEkle').val()>0){
            if($('.IslemlerGroup').length < maxGroup){
                $('#tempForm .selector').val($('.selecTorEkle').val());
                $('#tempForm .selector').trigger('change');                
                $('.IslemlerWrap').append('<div class="form-group IslemlerGroup">'+$('#tempForm').html()+'</div>');
                $('#tempForm')[0].reset();
            }else{
                alert('Maximum '+maxGroup+' groups are allowed.');
            }
        }else{
            alert('Parça Seçiniz');
        }
    });
    $('.IslemlerWrap').on('click','.remove',function(){
        $(this).parents('.IslemlerGroup').remove();
    });
});