A paid game, and especially if it's your first, can easily take 3 weeks before it's indexed.
If you have more questions about the process, you can read here:
https://itch.io/docs/creators/getting-indexed
I also recommend extending the part that says "View this community's rules…" at the top of this subforum.
PS: The documentation talks about a few business days, but if you search the forum, the process nowadays is taking 2-3 weeks without a problem.