According to these dictionary links, both 學識 and 知識 mean knowledge.
http://www.cantonese.sheik.co.uk/dictionary/words/6078/
http://www.cantonese.sheik.co.uk/dictionary/words/6078/
1) What's the difference between 學識 and 知識?
2) Which one would be used to translate this sentence: "He is a very knowledgeable person."