Cut squash in half horizontally.
Scoop out seeds using a spoon.
Place half of squash in Instant Pot, cut side up. If both halves will fit, place both in the pot.
Pour water into the bottom of the pot. Sprinkle squash with salt.
Seal lid and set cook time for 17 minutes.
When cooking time is finished, do a quick pressure release.
Open lid and carefully remove squash. Use tongs or a fork to pull the "noodles" from the squash and serve.