probably i just can't google correctly what I wanna know about. So, maybe someone of you might know this. My question is: is there any limit of SSL amount on cloudflare? I mean, can i create over 9000 websites and still have a free SSL for every of them, or there's any limit?
If you are referring to the Free Plan and Universal SSL certificates, I would recommend to familiarise with the Cloudflare Terms of Use and Self-Serve Agreement which provide useful information on what is allowed.
As far as I am aware, there isn't a limit "per-se" on the number of zones that can be added in an account (see also here as reference)