https://www.cnet.com/news/huawei-open-to-selling-its-5g-chips-to-apple-says-report/

Huawei unveiled its 5G modem, which is used in the Mate X phone, in January. However, the company reportedly sells almost none of hits chipsets to other device makers.

There's also no indication that Apple would even be interested in Huawei's 5G tech.