I am allergic to pork, can Crisco be substituted for lard in a recipe

Generally speaking yes but whether or not Crisco is the best alternative depends heavily on the specific dish.

Other options are butter, margarine (for some people), other animal fats (such as duck or goose), or some other vegetable fats (coconut oil is one occasionally used replacement).

For biscochitos (cookies made with lard), I'd use butter instead, for a nicer flavor. https://food52.com/recipes/2239-biscochitos

;o)

Jews have been using Ctisco that way for about a hundred years.
Look at some of the best Jewish food writers or blogs for tried and true recipes, some of which you may like.
Joan Nathan
Tori Avey
The Nosher
My name is Yeh
Shannon Sarna