Counter Column in Database

Hello forum members,
I need help with a feature that is beyond my modest Corvid capabilities.
I’ve created a long custom form for a client who is managing a live vintage car charity auction in which car owners wishing to auction their car sign up online and a dynamic page is generated with their car details. This part I’ve done. The problem I can’t solve is that they wish to assign a unique number (counter-style) to each car entered in the auction that appears as a column in the database so that I can display it on each dynamic page. How can I accomplish this?
Thank you in advance,
Kippy Flur

More details are needed. what is this number? and ow should it look on the page?

thank you for replying. I guess you could compare this number to an invoice number. We will start at 1001 and with each new submission of the form we need to generate the next consecutive number. I would like the numbers to be displayed in the first column of my form database so that I can include them in the automatic email notification that is sent to both submitter and auction organizer. Is this possible? Thanks again for your help.