There will be only 365 x 6 tokens max for ever?

Every year it will be 365, for 5 years, there may be only fewer of them if during the year the tokens from the treasury do not reach the conditional price will be burned, i.e. 1 token will go into the treasury every week.

~350 Y365 token available at the moment on Omnidex only?

So far there are 365 Y365 for omnidex

https://t.me/year365y
https://365year.net/index.html

This is not an investment advice, make your own research and invest only what you can afford to lose.