I am trying to upload a game which is made by ren'py. I did some stuff with build distrubutions and I have winrar files for the Visual Novel. Should I publish using these files?

yes you can and there are more options available if you want it to look professional:

https://alternativeto.net/software/nsis/

We generally recommend ZIP files for distributing your game. We have some guidelines around packaging your game here, but it may be a bit advanced: https://itch.io/docs/itch/integrating/compatibility-policy.html