The question is not whether or not God will judge you for it. (And it is never our place to usurp the judgement of God.)
The real question is - what is it doing to you? How is it affecting you? Why are you drawn to it? And can you answer these kinds of questions honestly to yourself? Because we as humans are sadly prone to thinking our reasons are good ones, if we aren't careful.
If it confuses you, if you feel the wrong kind of attraction or fascination with alternate religions, it's something to step away from. If you find yourself discussing religion with people who have different kinds of beliefs, and you want to be able to speak to them with more understanding in order to share your faith, then study can be a good and necessary thing. Can you discern the real reason?
(Of course I can't do that for you, nor can anyone through a forum.) As for me personally, for an example, I have no real interest in such things, have gone decades with no interest in them. But I am sometimes asked questions about Christianity by Muslims, for example ... and I need to understand what they believe in order to clearly explain things to them in a way they can best understand. Now I don't own a Koran (though that wouldn't necessarily be a sin) and haven't read much of it. An awareness of their theology is what I need, and an understanding of their general ethos. I have no fear that it is any kind of sin for me to learn this. The same is true of various kinds of religions/beliefs. People will feel disrespected if you talk "at" them ... it's better to know what they believe rather than accepting superficial stereotypes.
But on the other hand, some people feel a fascination and draw of a different sort. If it is a matter of being drawn to other faiths for the sake of the religion itself, in a selfish motive or desire, that's very different and likely to be spiritually dangerous, and should be avoided.
Hopefully we can learn to answer these questions for ourselves, but if we cannot, then a trusted spiritual counselor or mentor can be invaluable. (And hopefully they would be teaching you to discern on your own.) It's often a good help to have such a person regardless, because we can be so prone to fooling ourselves about our real motives.
God be with you.
