How do I know if it worth it?

Hi there.

Any chance to know if your template will be accepted and not hard rejected before finishing it? Some ideas? Thanks.

You can share it here in the forum and other authors/buyers can give you some feedback but no one can guarantee you anything here. If you want to be 100% sure, you just have to submit it.

Thank you for your answer! Do you know if it is alright to submit an unfinished product, only the homepage and some inner page, just to check if it it is a good start?

No it must be finished or you will do more damage than good as it will definitely be rejected.

Thanks so much! I will keep in mind.

As @LSVRthemes said your best option is to share a link to the file demo/preview here

Thank you. I will do so.