If you got a Youtube notification about a copyright claim, after that you will be able to dispute it with the following message: “The track was legally obtained from Icons8's Fugue website: https://icons8.com/music/” by choosing the appropriate reason here:

Here is the instruction on how to dispute a Content ID claim.

Your video won't be removed. Usually, the claim is just to track or monetize the video, not to block it. After you submit your dispute, the copyright owner has 30 days to respond. During this time, the claim will be temporarily released. If they don’t respond within 30 days, their claim on your video will expire, and you don’t need to do anything.
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