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No. If you've used it to input literally anything else you've already obfuscated the password (typing on keyboard, using apps on phone). Besides that, there is no telling the length, number of repeated characters, or shift combined (capital letters, symbols) involved just by looking at finger prints on a keyboard.
Two factor authentication and other layered security is low effort and more effective. If you're worried about a PIN for debit cards the greater concern is skimmers, common at gas stations and atms. The best preventative here is to become familiar with checking for those and minimizing how much money is in your debit account - keep it in savings, use a credit card instead where able.
I do clean my phone screen and keyboards occasionally just because they can get gross.