I am the founder of a community that, I believe, is unique on the Internet. Probably, because it is a niche subject area within the academic field of humanities.
It is a forum where the general public may pose questions to a panel (roughly 200) of academic biblical scholars from around the world.
Recently, we have been developing AskBibleScholars.com in order to reach a broader audience (off-Reddit and into the wider Internet).
We do not have much knowledge nor experience in marketing web sites.
If you have any guidance, then we would be very appreciative.
If there is no budget, you would need to go to communities who might be interested in asking such questions.
Christian adjacent forums / subreddits (I know…) / Facebook groups.
On the other side, I think some atheists might want to know what Bible said about something in order to refute them.
If there is some budget, then: