I created a file or SharePoint site, but cannot find it in the app
When you create a new file on Microsoft 365, or a new site in SharePoint Online, it typically gets indexed by Microsoft Graph within a few minutes, but the exact timing can vary based on several factors. The SharePoint search crawler operates on a schedule, and new or modified content is indexed during these crawls. Generally, the indexing might take from 5 to 15 minutes, but it can be longer if there is a high volume of changes or the system is under load.
For urgent indexing needs, SharePoint offers options to manually trigger a reindex of a document library, which will ensure that the content is included in the next scheduled crawl. However, even with manual triggering, the indexing is still subject to the overall system's current load and scheduling.
If you find that content is not being indexed as expected after a reasonable amount of time, it's a good idea to check if there are any issues with the indexing settings or if manual reindexing might be necessary.