- Start with a file on the homepage of Adobe Express. In the editor, select Text > Add your text.
- In the Text panel, open the fonts drop-down and select Upload.
- In the pop-up window, select Add fonts. Browse for a font on your device and select Add.
- To use your font, open the fonts drop-down menu in the Text panel and select your custom font under Uploaded fonts.
More information on this can be found here