Each Vault Hunter comes with three different Skill Trees in Borderlands 3, and it's very easy to make a build that is far from optimal when you reach a higher level. So, how do we reset the Skill Points and change our spec in Borderlands 3? It's actually a lot easier than you would imagine, and all you need to do is to head to a Quick-Change Machine. These are the same machines that you use to change your appearance, and they are found in many different locations in the game.
When you are at the Quick-Change Machine, choose the "Repec" option that is there. At this point you must pay a fee to be able to reset all your Skill Points, and the exact cost will be based on your level. It tends to be pretty cheap though, so don't be afraid to try out a new spec.
You can reset your Skill Points as many times as you want, granted you have the money to pay for the reset at the Quick-Change Machine. While it's pretty cheap to change it once, the money really adds up if you change it 3-4 times each level, so try to find a decent build that you can stick with for a while.