When you install a custom font, each font will work only with the computer you've installed it on. Custom fonts that you've installed on your computer might not display the same way on a different computer. Text that is formatted in a font that is not installed on a computer will display in Times New Roman or the default font.
To save a copy of a Pages document as a PDF, open the document, then choose File > Export To > PDF [file format] (from the File menu at the top of your screen). Specify export settings. PDF: These files can be opened and sometimes edited with applications like Preview and Adobe Acrobat. Click the Image Quality pop-up menu, then choose an option (the higher the image quality, the larger the file size of the exported copy).
You can use Word Online to convert your document into a PDF by using the Print command. This will generate a basic PDF that preserves the layout and format of your original document. Or opening in Word to start using the desktop app and doing from there.