Do these tokens have any use cases or they are just made to collect money from their fans ?
I thought that this article will help you to understand what was main purpose of fantoken. The fan token idea created by chiliz and this exchange site is also actively offering more and more partnership with various popular club to issue their own fan tokens to help the club to engage with the its online community.
https://www.chiliz.com/en/what-is-a-fan-token-and-how-do-they-work/Would they be used in gambling ?
It would be possible to be used in gambling since it was only asset that can be used in dapps but the main purpose of fan token to help the club to be even closer with its fan. Any token has different ability. I think that used this to be able to buy merchandise or ticket would be very beneficial from the club instead of bringing it into the gambling platform. Fan token that issued by football club act as a governance token for the club and any hodlers will have ability to participate in the vote for the future plan by the team. This may the main use case from this token.