https://youtu.be/Cr-eWyPELVA
Default export settings are usually satisfactory, but resolution, format, codec and frame rate can be chosen. Experiment for best results.
To protect your work, Save Project File AS routinely, giving it a unique # or name, so as not to overwrite prior saves. Using Save Project Files (no AS) will overwrite. From the HOME tab, that choice is available by clicking the chevron to the right of the Save Project button on the toolbar. These are VPJ files that tell the program what to do. They are not playable.