You should have Latitude and Longitude in order to show data points on map.
Once you have those fields you need to write following in script
GeoMakePoint(Latitude,Longitude) as GeoKey,
Here GeoKey will be used a Point Layer. This is for default Map provided by Qlik Sense and also same is from Qlik Maps (paid version)
But you've different Map extensions, like SVG, Google Maps, Geo Qlik etc takes different dimensions.
Not all Maps are free, except SVG, Qlik Sense default Map. Other mapping extensions require license.