Upload movie list from excel

I would know if there’s a way to uplaod my movie list from an excel file.

Welcome! This is currently not possible directly. With some work you could create a JSON with TMDB IDs that SeriesGuide can import. The format is documented at JSON export format · UweTrottmann/SeriesGuide Wiki · GitHub or just add some movies to SeriesGuide (e.g. set watched, add to watchlist, etc.) and do a backup and inspect the file.