For the CompTIA A+, I would make sure to pay attention to what Wes Bryan shows you in the episodes this topic.
There is no easy way for you do this unless you can find a imac, mac mini or macbook to make this work.
In this case, it's a value judgment on the number of questions you think you'll be hit with on the exam that are based on macOS.
Personally, I believe you will be able to lean more heavily on your study of Windows and Linux than on macOS to succeed on the A+ exam. I cannot guarantee that of course. But I do believe it's true.
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