Great to see that you are taking precautions when planning to have Botox injections. But not to worry, they should not interfere with any vaccinations you plan on having prior to taking a trip. The Botox remains localized in the area it is injected, and will not spread to the body. With that being said, you should be fine, as the two are not related. I hope this helps, and enjoy your travels!
Without knowing specific vaccinations you are receiving or considering, it's difficult to answer this question. Check with the Botox provider who has access to the specific recommendations and guidelines included with the packaging, to be certain.