My husband is 62 and has had 3 back surgerys and can not stand or walk far. What can we do to apply for disability.

From the facts you describe, your husband is still working. Depending on his income, he won't be able to apply until he stops working. I would recommend that you find an AV-rated lawyer in your area that is willing to work with you before you stop working and before you apply. Use the "Find a Lawyer" icon in the upper left of this page to assist you. It is important to have this planned out very carefully. If finding a local attorney doesn't work out, you can apply on your own online or go to your local office and apply.  Good luck to you.