For an ingrown toenail procedure is there a gas to request if you are bad with the shots to help numb yourself for when they have to give the shot?

Typically not. Most ingrown procedures are performed in an office setting and gas is not typically available. An oral sedative can be given prior to your office procedure or a topical anesthetic can be applied to the area to be anesthetized prior to the injection. If you opt to have your procedure performed as part of a procedure in a surgery center setting, the initial anesthesia administered may be gas.
Possibly.... Some podiatrists may have nitrous oxide gas for use in their office. It's not real common, so ask in advance.