You haven't mentioned what you need help with. What do you need help with?
Unless you have a lot of users, with something really novel/special it is unlikely you'll get many people helping.
Your repository mentions "similar to C", but I see python-like indentation. Which makes me wonder what you're actually aiming for?
Once you have the core of the language the usual stumbling block is getting libraries available for HTTP fetching, database access, etc, etc. Do you have an idea of the kind of things that your language will be used for?
The more you document, and writeout there more likely it is you'll find people interested in what you're doing, but without that it'll almost certainly just be "your" project. (And there's no shame in that, or harm in it either.)
Like, what enhancements do you need or what is left to be implemented in your language to make it fully functional/turing complete/free of memory leaks etc etc.
Why is it implemented in V?
I think it's too early to find contributors. Try to find users. Some users became power users. Some power users became contributors.