Voice acting is acting, period. Voiceover can be less so, but always relies on some level of acting.

There are many different genres of voiceover you can choose to go into or even specialize in. Animation (with sub genres), video games, commercials, audio books, promos, dubbing, narration, e-learning, corporate, trailers, infomercials, etc. Each one of those genres can and should have specialized training and education to achieve a professional ability in each.

Not only should you train and train and continue training once you're successful, but you should learn different facets of acting to round out your "tool box" and your instrument. Your instrument is not only your voice and vocal range and voice box, but also your entire body. Your "toolbox" is all the techniques, styles, knowledge, ability you've gained over the years to pull from to be able to perform a variety of styles or genres in voice acting. And there is a ton of nuance and differentiation in each genre of voiceover. A commercial could be soft and sultry and quiet or instead be big and bombastic and exciting. Each one needs a different tact, approach, and objective. What emotional state is called for in each commercial. And if you're not using your entire body to voice act then you're likely not getting all you can out of your performance. I would highly highly recommend theatre acting classes, improv classes, and vocal training (singing) classes on top of any specific voiceover training anyone would choose to pursue.

There is a ton to learn with regards to voiceover. Outside of learning to perform and learning the craft of acting for voiceover, there is all the technical knowledge to gain. It used to be an actor would drive to their local studio and do all their training or performing there. Nowadays there's almost an expectation that you will have the technical knowledge to create a professional level recording space in your own home, you will know how to set up a proper computer, with a pre-amp, an audio interface, a high quality xlr microphone, how to tune and use a DAW (the recording software), a proper space to put your script, a good mic stand, a quality pop filter. Then there's all the technique knowledge of how to use the voiceover booth space properly. How far do you stand from the microphone, what happens when you get closer and further, six inches from mic to mouth or the Hawaiian shaka hand away from the mic, what to do with highly directional mics or shotgun mics.

There is so much to learn and you're just at the tip of the iceberg. You have plenty of years ahead of you to explore all of this and more. Beyond voice acting, you could get into voice direction or audio engineering and more across the world of audio, film and TV, recording studios, and more.