There are. I recommending taking Speech 101 at a local college. That's what I did anyways, to get my own journey of shedding my fear of public speaking and learning how to organize my thoughts in a clearer way. But that was 20 years ago. These days, there are on demand public speaking courses (such as https://masterclass.ted.com), tutorials on youtube, and tons of articles online. I would choose the method that works best for you.
For me, what I found most effective was recording a video of myself giving a presentation (even in an empty room without people), then reviewing the footage. You'll then notice all the filler words, awkward hands, etc—which you can then work on. Repeat this process until you feel more comfortable, then try it in front of family and friends and ask for their feedback (on an index card, after you've finished speaking).
Practice makes perfect, and this is a skill that will help you for the rest of your life, so I hope you master it. I wish you the best Voc!
In fact, you may find out what kind of verbal communication you would like to improve, e.g. public speaking & presentation skill, daily conversation, difficult conservation, etc.
You can start find courses of daily communication first. In addition to instructor led course, there are plenty material online. Regardless of either online or instructor led course, you still need to practise the skills you learnt in the class. Practise makes perfect!
When you find yourself making improvement, you can try to learn more presentation and public speaking skills.
Hope this helps! Good Luck!
I too also struggled with verbal communication. In college, I took a public speaking class. In this class, we recited numerous kinds of speeches from informative to persuasive to live audiences. I think that a class similar to this would definitely benefit you.
Also consider if your school has a debate club or similar opportunities where you would be able to practice "public speaking" but in a smaller group where you could get more comfortable before taking on bigger stages.