Guideline 5.2.5 Apple Products: states:
Don’t create an app that appears confusingly similar to an existing Apple product, interface (e.g. Finder), app (such as the App Store, iTunes Store, or Messages) or advertising theme. Apps and extensions, including third-party keyboards and Sticker packs, may not include Apple emoji.
Even more precisely, in Guidelines for Using Apple Trademarks and Copyrights (https://www.apple.com/fr/legal/intellectual-property/guidelinesfor3rdparties.html):
Use of the keyboard Apple Logo (Option-Shift-K) for commercial purposes without the prior written consent of Apple may constitute trademark infringement
2. Apple Logo and Apple-owned Graphic Symbols: You may not use the Apple Logo or any other Apple-owned graphic symbol, logo, or icon on or in connection with web sites, products, packaging, manuals, promotional/advertising materials, or for any other purpose except pursuant to an express written trademark license from Apple, such as a reseller agreement.
So I should avoid using the Apple logo.