The answer is "No". There is no specific medicine or vaccine in homeopathy for Covid-19 or SARS-CoV-2 disease.

However, there is a hypothetical thought that Arsenicum Album 30 plays a vital role in the prevention and cure of coronavirus infection to some extent. This is not clinically proven, it is just a hypothesis.
There are no research papers available on any international or national scientific journal websites supporting this statement. No research has been carried out in the past and not even now. It's just an assumption from the Ministry of Ayurveda, Yoga, and Naturopathy, Unani, Siddha, Sowa Rigpa, and Homeopathy (AYUSH) of India that ARS ALB plays a key role in the management of coronavirus infection and it can act as prophylactic medicine.
In Homeopathy, Arsenicum Album (ARS ALB) is generally used to treat depression, anxiety, and fear caused by insecurity, digestive disorders, and mucosal inflammation. It also serves in ailments characterized by burning pain. Once upon a time, this ARS ALB was used in the treatment of Syphilis.
This Arsenicum Album is available in solid (tablets or pills), powder, and liquid forms. Consult homeopathic doctors near you and ask them about Arsenicum Album and its role in coronavirus infection and if they advise you to consume those pills then follow up the procedure.
Don't forget to ask the dosage and frequency of administration of those tablets or pills and consume them as prescribed.
Please do note that this is not a treatment for coronavirus infection and even not prevention for Covid-19 disease. This just serves as an add-on in the prevention and management of coronavirus infection. As there is no side-effect of administering those pills, you can have them as per your prescription.
There is a proverb that "Having Something is Better Than Having Nothing". This is what we are following here.
Let's do all those things whatever possible to prevent the spread of SARS-CoV-2 infection.
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