In Airtable, add an editable Number field for the number of copies you want to create for each record. Enter a small whole number, such as 1, on a test record.

Create this automation and select the Airtable base and table you want to use.

Select that number field under Number of Copies Field.

In Run, select a filtered view containing only the test record, then run the automation.

Check the new records in the same table. The automation sets the copy-count field to 0 on the original and the new copies after successful processing. Blank or non-positive copy counts are skipped.

Once the result is correct, enter copy counts for the other records you want to duplicate and expand the selected view.