columns with incremental fields

hello, I have to export the data of my orders that have incremental fields that repeat based on the quantity. for example for an order there could be the same fields but with a different name, like these:
cstm_Name_1
cstm_Name_2
cstm_Name_3
and
cstm_Number_1
cstm_Number_2
cstm_Number_3

the number next to the name of the field increases based on the quantity selected in the order, so I can’t know how many there will be in all.
how can I do to have all these values ??under the Name column and the numbers under the Numbers column? and above all create a standard template that you can always use?