Hello,
I think this year the CRS invite score has gone as low as 435 for OINP NOIs. For French and Skilled trade stream it could be even lower.
You could check the official data here
https://www.ontario.ca/page/oinp-express-entry-notifications-interest
It mentions CRS scores for NOIs sent for diff NOCs...
As far as NOIs are concerned, you have a chance (depending on the NOC you are in).
Nomination after NOIs is the decision of the province based on your documentation/case. NOIs don't guarantee nomination, but if the documentation is in order, i guess they would nominate you...