"我对历史不感兴趣。"
Translation:I am not interested in history.
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对 used here indicates how one emphasizes "towards" an object or target.
This character is in fact a preposition. See more here.
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So in this case it is the idiomatic equivalent of "in" in the English. That is to say that "in" does not always translate into 对 or vice versa but in this specific case it does.
对 originally wrote a full verb meaning 'to face toward'. In sentences like this, it is a Coverb whose core meaning is 'toward'. The Coverb 对 functions much like an English preposition. As with other languages I've studied, prepositions cover a variety of uses that don't match with similar prepositions in other languages, hence the variety of meanings mentioned in other posts.
You probably found answers to your question; still, I'm posting this here for others : https://cn.hujiang.com/new/p529381/