Some more details on the update frequency of services and maps I use:

• After you upload something, it changes the database instantly.
• Things getting data directly from there should also update near instantly, like when you download in JOSM.
• The update delay of the raster map on openstreetmap.org depends on the zoom level. More zoomed in tiles update near instantly, lower zoom levels are updated weekly, monthly. Coastine is a special element, it doesn't update with others, as it's really resource intensive. https://wiki.openstreetmap.org/wiki/Coastline
• Queries on Overpass-turbo.eu have a delay of 6-10 minutes.
• Afaik StreetCompete quests are near instant, at the time you download them, but the base map updates only monthly, I read this in some forum, not sure.
• Organic maps usually monthly. Map updates are tied to app updates, so sometimes they miss some month.
• Magic Earth usually monthly, but sometimes they skip one or two. It's annoying for me, because I use this for car navigation usually. The streets I use frequently are perfect now, but once I made a typo accidentally on a destination sign, and I fixed it some days later as I noticed while driving there, but ME didn't updated its map for like 3 months after that, and I was always reminded to my typo I already fixed, ahhh...
• Osmand defaults to monthly updates, but if you pay for it or download the foss version or you are a frequent osm contributor you can get live updates up to hourly frequency: https://osmand.net/docs/user/personal/maps-resources#osmand-live

I wrote this from memory, so it may be not 100% up to date, please correct me if I'm wrong