Can I get my Arenapunte at Fortnite?

I played Arena Duos with a friend and had a disconnect in the middle of the game. Can I still get my Arenapunte that I did and that my friend did? Would be cool

No. Unfortunately not. You only get Arena Points if you die in the game. If you disconnect or leave the match, you will not get any points. Incidentally, the same also applies to challenges.