I can’t help bypass or remove a PDF password without authorization.
If you own the file, use the correct password or ask the sender for it.
Check whether the PDF was encrypted by mistake and request an unprotected copy.
If you remember part of the password, try your usual password manager or saved credentials.
If the PDF is yours and you have legal access, use the original source file to export a new unlocked PDF.
If it is a work or school document, contact the document owner or IT administrator.
If you need access for accessibility reasons, request an accessible version from the publisher or owner.
If you believe you are authorized but the password is lost, consult the software vendor’s official recovery options.