Can I use the sf symbols icons commercially?

What do you mean exactly ?

• use in code, of course
• use as standalone illustrations, it depends.

IMPORTANT

SF Symbols includes copyrighted symbols that depict Apple products and features. You can display these symbols in your app, but you can’t customize them. To help you identify a noncustomizable symbol, SF Symbols badges it with an Info glyph; to help you use the symbol correctly, the inspector pane describes its usage restrictions.

https://developer.apple.com/design/human-interface-guidelines/sf-symbols/overview/

The way I understand it, they are only to be used in code. Also, if you use an Apple-specific symbol (such as the iCloud symbol) it can only be used as a representation of an iCloud function.

Dan Uff

Only if you're making an app exclusively accessible through Apple devices. You can read it in their repressive license.