PR for those in the new H1B Open Work Permit program?

What is the potential pathway to PR for those in the new OWP program?

You will extra points for Canada PR express points for work in Canadian work experience (if you physically go and work from Canada).

Since my age is 43 , is it possible to work for 1 year and apply through PNP program ? If I do not receive PR in 3 years , how can I extend my open work permit ?

Yes you can however, the more Canadian work experience you have , you can get more points.

Currently there is no extension available.

Ok. But since I applied for PR and waiting , I can apply for bridging work permit ?

I think they are allowing to apply for work permit as its a separate program than PR.