Rename pdf files using text within the pdf itself on macOS Sonoma

I have several thousand pdfs that I need to rename. In the pdf is an account number and I want to rename the pdf file to that account number. The account number is in the same location on every file. I know nothing about scripts and/or automator but I am willing to learn. This is a process that I have to complete each year when we send out renewals. I did see a few other threads but I am lost and need someone to explain it in simple laymans terms. I can add an image of the document if needed. TIA

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