You should better ask on some Unix- or WordPress- focused site. Try https://superuser.com/
But make sure you provide more information that you did in your post.

Hi!

I'm messed up permissons for my wordpress site...
I changed them for a backup plugin, and now i'm dined
acsess to login ( <invalid hyperlink removed by admin> )
AND acsess to view the site ...
I've tried edit the permissons with winSCP but nothing seems to work...

I new to this permisson settings... What and where should I change?

(sorry for poor english .. )

Best Regards
Inger