If you want to pass the authorization token as a header you just need to add a HTTP Header Manager config element in the HTTP Request Sampler. You can then pass the Authorization token value in the same manner as you do when you hit the api via a rest client like POSTMAN!
In-case you get the token as a response from another api and you want to simulate that as well. Then the api that gives the token in response need to precede and you need to extract the token received in the response into a variable that you'll pass in the subsequent requests. You can extract the token using a Regular Expression Extractor post processor, Thanks!