When available, live results for international competitions are usually linked from the FIE website. Find the correct event in the calendar (https://fie.org/competitions) and the link should be there. Relevant links to live video feeds from the competition may also be there.

The FIE upcoming competitions page can also help you stay on top of when competitions are scheduled so that you can plan which ones you wish to watch/follow.

If the competition you are look to follow is not an FIE event, there are a number of other sites that facilitate live results that can be checked for the desired event. Depending on the organising club, live results from Irish competitions can also often be found on these sites.

Fencing Time - https://www.fencingtimelive.com/

Fencing Worldwide - http://fencingworldwide.com/en/

Engarde - http://engarde-service.com/ 

Fencing Fox - https://fencingfox.com/resultats 

Ophardt - https://fencing.ophardt.online/en/calendar