Dynamic Bearer in the Header Authorization

Hey everyone, so I have an API that generates a token. To get the data using this token, under the headers for the get request, I need to put Authorization as the Key, and Value Bearer abc123 something. Now, this abc123 changes every-time, so is there a way to dynamically change this value?

Can you share what you have set? Also, are you fetching bearer token using client_credential auth? (so only for your account)
link to api doc is helpfull too