https://www.moneyweb.co.za/news/tech/so-you-own-a-huawei-phone-now-what/ Relevant part:

How will it affect current Huawei phone users? 

Both Google and Huawei have said they will continue to support existing Huawei devices — as well as those of sub-brand Honor.

That means current Huawei smartphones should continue to function normally and users should be able to update their apps and other parts of Google’s Play Services.