Once you've created your ad on Socioh, Facebook uses a mix of human and automated reviewers to check it before it goes live. Facebook typically reviews ads within 24 hours, although it can occasionally take longer.
If your ad is still not live after 24 hours here are a couple of things you can do.
- If your ad is still marked down as "pending review", you can send in appeal to Facebook here to try and speed up the process.
- If your ad has not been approved, I'd recommend reviewing Facebook's Advertising Policies, changing your ad accordingly and resubmitting it for approval.
For more on this please refer to the Facebook Ads Help Center.