Hot water line out side is leaking on threads can I cut the galvanized pipe and glue on pvc fitting

The simple answer is NO.

There may be a sharks tooth fitting that would work. I do not know enough about the sharks tooth, but one of the plumbing experts will be able to answer that.

Chuck

Can you unscrew the pipe? If so, why not use a CPVC to IP adapter and then CPVC pipe.

can I cut the galvanized pipe and glue on pvc fittingNon you can't!

hot water line out side is leaking on threads What's a hot water line doing outside your house?
Do you wish to replace the old galvanized or simply repair the leak? Back to you, Tom