Hvor kan man uploade en GEDCOM-fil til FamilySearch.org?
If I understand you correctly, you are looking for a way to "upload" a GEDCOM file to FamilySearch.
Please read the following linked help Articles, they should provide you with good overall guidance for working with GEDCOM files and FamilySearch.
How should I prepare my GEDCOM file?
How do I upload my GEDCOM file?
How do I copy information from my GEDCOM file into Family Tree?
What happens to information uploaded from a GEDCOM file?
I hope the information contained in these articles really helps you! All the best for your future research!