Hello I have a question i am trying to kill 5 axia ships however whenever I shoot them down I just get demolished, now it tells me to go to grey space however cannot find no ships of that kind in grey space, then when I wait for some to leave the don't they just dock at the station. Where can I go to kill 5 of these to complete the mission please help.

One method people have used to expedite that mission is to have a friend start a convoy mission from an Axia station that has a destination in or thru grey space. For example a mission from Verasi headed "east" will let you set up an ambush in Edras.

Also if you just loiter around wormhole sectors in greyspace with your "Axia Must Die" mission active, they eventually come looking for you (like someone ratted you out). However, there is very little rhyme or reason to how long it takes for them to find you.

I'm remembering once someone attended nation war with that mission active, and the Axia vultures showed up mid-war.

Solo version

Goto an Axia station in Verasi
Pickup an escort mission with greyspace station as destination.
Launch
Abort the mission
Goto to Valent station in Verasi
Take "Axia must die" mission
Launch and intercept the Axia convoy you have previously launched when it's in greyspace.