Epoxy glue is one of the most difficult stains to remove from a fabric. Read the tag on the fabric before trying any of these cleaning methods.
Treating the fabric while the glue is wet will be most important, but often it will dry before you can think about cleaning it.
Placing the fabrics stain side down, apply a few drops of dry cleaning solution. Turn the fabric back over and scrape the glue stain with a butter knife or your fingernail.
Another method that you might want to try is to freeze the fabric, and then break the glue apart by moving the fabric around a little bit and pick it off with your fingernails or scrape it off with a dull butter knife.