Male privilege is a very real thing. If you decide to transition and pass full time you will be impacted by it. How much will be affected by many things, profession, region, urban vs rural, etc.
Being judged and possibly dismissed or elevated by external appearance happens to a lot of people for different reasons, race, physical abilities, weight, age and so on. If you have experienced one or more of these other situations you may have an idea of what that is like and this will just be one more layer. If you have only experienced white, male, able bodied, privilege you may be in for a serious reality check. On the other hand learning empathy/compassion has its own rewards, it doesn't have to be all negative. You could discover a whole new world that fits you even better.
As a male AFAB I have paid dearly financially, professionally, and in terms of credibility in many cases. You are just not taken as seriously. Would I now trade in my understanding of how things really work and the ability to see how others are impacted? No, but hindsight is a powerful tool.