It's well worth watching
would be my preference From Lexico
A short train journey to the north, Blair Atholl and Atholl Castle are well worth a visit.
‘The book is well worth reading and you can make up your own minds.’
ell.stackexchange.com/users/1694/Mari-Lou A
I find "very worth watching" to be acceptable English.
The intensifier "very" applies to the entire adjective expression "worth watching".
This is a link to an ngram comparison of the two expressions, "very much worth", and "very worth".
Ngram "very worth, very much worth" Examples of the use of the phrases in books are linked at the bottom of the page.
As usual, some of the examples don't fit, but many of the examples of "very worth X" are apt.
ell.stackexchange.com/users/109772/Jack O'Flaherty
Not in this context (see other answers); but the phrase "very worth" can be used, albeit from old English, in a different context: Losing my fish took my very worth from me very here emphasises the completeness and importance of the worth that has been lost
ell.stackexchange.com/users/45366/simonalexander2005
Adjectives can be modified by adverbs.
The adjective "worth" can be modified by the adverb "very".
Its use as an adjective in "This presentation is very worth watching in its enterity.
" is recognized by definition 9.c.(b) in the Oxford English Dictionary: Sufficiently valuable or important to be treated or regarded in the way specified; deserving of the time or effort spent.
This is divided into three sections, depending on whether its complement is a) a noun or a pronoun, b) an infinitive, or c) a verbal noun or gerund.
c.
With verbal noun or gerund as complement.
"Watching" here is such a verbal noun.
Further, the verbal noun can be (a) preceded by a determiner, or (b) not.
(b)
With unmodified verbal noun or gerund, as worth trying .
ell.stackexchange.com/users/6852/chepner
My common casual usage if I were speaking extemporaneously would most likely be to use "really" for emphasis.
It's "really worth watching".
If I was suggesting it had particular value and wanted a more formal nuance
I would would say "well worth watching".
If I were writing E.G. email I would probably use "well".
I am a native American English speaker with a BA.
I would probably never say "very worth watching".
Don't ask me why.
In my social circle that would sound awkward.
Just my typical usage.
ell.stackexchange.com/users/116242/Ken Gingras
"Very much worth" is a good choice.
"Very worth" is technically good grammar, but nobody ever says it.
ell.stackexchange.com/users/4427/Panzercrisis
You could also use This presentation is very worthwhile watching in its entirety.
For me this is a much closer / smaller change, and reasonably natural usage.
ell.stackexchange.com/users/89698/Mike Brockington
Is the expression "very worth" proper English, and if not, what are some alternatives?  Example:    This presentation is  very worth  watching in its entirety.
Is the expression "very worth" proper English, and if not, what are some alternatives?
ell.stackexchange.com
<expressions>
ell.stackexchange.com/questions/249394
ell.stackexchange.com/users/3023/Franck Dernoncourt
 It's  well   worth watching .    A short train journey to the north, Blair Atholl and Atholl Castle are  well worth  a visit.  he book is  well worth  reading and you can make up your own minds.’  It's "really worth watching". "Very worth" is  technically  good grammar, but nobody ever says it. “Really worth" or "well worth" are far more appropriate alternatives.
“Really worth" or "well worth" are far more appropriate alternatives.