Go to any course that is available online for Hashicorp and practicing exam questions is curial to clear the main exam. for hashicorp exam ,
I suggest going with Skillcertpro which costs 20$ but trust me its worth every penny. There are around 400+ questions. Each questions comes with detailed explanations which will help us understand the topics. I also used for Aws developer exam and cleared it in first attempt.
This might take time to go through all questions, but its worth your time as this is not so easy exam to clear. Enough preparation is needed.
If you’re scoring above 85% in their mock exams. You can clear the main exam as well.