You need to find the database names of the fields in woo. Then you need to create and acf/save_post filter https://www.advancedcustomfields.com/resources/acfsave_post/. When the post is saved with the ACF fields you need to get the values of those fields and use update_post_meta() to update the woo fields.
woo may have it’s own function to do the same.
The other site, you need to figure out what hook in woo to add a filter to in order to copy the values in the other direction. You’ll need to get this information from woo support.
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