finally i found file location /home/username/.PhpStorm2019.3/config/phpstorm64.vmoptions just type ls -a in terminal and you can see phpstorm config folder in roor directory
I added one line text on custom vm options and after that I can't open PhpStorm. Here is my error text:
Error opening zip file or JAR manifest missing
Where is custom vm options file location on Linux ? On Windows I found it at user folder.
finally i found file location /home/username/.PhpStorm2019.3/config/phpstorm64.vmoptions just type ls -a in terminal and you can see phpstorm config folder in roor directory