How to export the data in OSM to RoadTripper

Assuming it's about roadtrippers.com and that you have added a road, a building or something similar to OpenStreetMap:

You just have to wait until roadtrippers updates their database with the changes from the main database (where your changes are), They probably use a copy of the database and update that every X days (or weeks). You have to ask them about the frequency of their updates if you don't find that on e.g. their support page

roadtrippers.com uses maps from Mapbox. At the bottom of the map page it says "Improve this map" and "Terms and feedback". Follow either of those to get in touch with Mapbox - you can ask them how questions about the maps there. However, given that I can see stuff I added yesterday on Mapbox's maps I don't think that is your problem.

So, when you say "appears in Road tripper" what do you actually mean?

If what you've added really doesn't appear on the underlying map tiles, then you need to explain what you added and where (posting the "improve this map" link for your problem location here would help).

If it's something else in roadtrippers.com you'll need to explain what buttons you were pressing within roadtrippers.com, what you expected to happen, and what actually happened. Most people here aren't familiar with the site so you'll need to explain exactly what you were trying to do.