I have to upload the theme via cpanel. But my theme file is 56 MB and the upload limit is 30MB.
In short, I wanna upload my premium theme which is 56MB.
You don’t need a paid plan for that.
If you want to upload files bigger than 32MB, please consider using a FTP client instead
I have downloaded FileZilla but facing some issue. Please check the screenshot
You've downloaded the wrong software, download FileZilla FTP Client NOT SERVER