All Typekit fonts are licensed for ePub.
Keep in mind, the epub reader can change the font themselves to suit one they prefer.
Yes all the Typekit fonts are licensed for printing.
You'll have to produce two versions of your document – one for printing and the other for Reflowable text ePub, which you then need to convert to the mobi format for the Amazon's Kindle.
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Note that the previous responses assume the Baskerville you are referring to is the Baskerville URW++ font available with Typekit. No Baskerville font is actually bundled with InDesign otherwise. And if you referring to Baskerville typefaces from other than Typekit or Adobe, you need to check the EULA (end user licence agreement) for each such font.