Survey123 normally supports only one location per survey; like GeoForm, multiple surveys can be taken.
There are ways to design a form to enable multiple points per survey. One way is to design a survey with a "repeat" group of questions that include a geopoint question; this requires the use of Survey123 Connect to author the survey (as opposed to the web author). A repeat group creates a related table that is linked to main survey's table in the database. A case where this might be used is inspecting a multi-building campus; the parent form would record information about the overall campus (land area, location of the main entrance) and the repeat would record information about each building (location, name of building, age, etc.). Some more information on repeats is at Repeats—Survey123 for ArcGIS | ArcGIS
A second way to obtain multiple locations per survey is available if using the Survey123 mobile client to fill in the survey. When a photo is taken, the GPS information at the time of the photo is stored with the photo as part of it's metadata (EXIF information). You would author a form with a series of image questions; after the data has been submitted, the locations can be extracted and converted into a feature class. We recently put up a blog post describing how to extract that location information into a feature class at https://community.esri.com/groups/survey123/blog/2017/03/22/working-with-your-survey123-photos
