While our Bundler - Product Bundles app doesn't yet offer a native translation functionality, the third party translations apps usually have the capability of translating the dynamic elements. For example, if you are using the Weglot translations app, your store should automatically get translated. If not, then you will have to add a class selector .bndlr-container for most bundle type and or .bundler-volume-target-element if are using a volume discount bundle the list of dynamic elements in Weglot app. You will then be able to translate the bundle widget.
In Langify app, you can translate the bundle widgets with a feature called Custom. It allows you to add a custom text and translate it in your desired language.

You can find a more detailed, step-by-step guide here: https://bundler.app/articles/how-to-translate-bundler