I have a 95 ranger that has front end damage from a crash. Airbag didn’t deploy but it should have. If I’m fixing the truck myself, what do I need to do to make sure the airbag and seatbelt system is fresh and ready to work if needed again?

 

I don't think that's enough damage to have triggered the airbag.

Most of your damage is sheet metal, you would have had to hit the bumper more solid and at a higher speed to trigger the airbag.