Your question is not much clear. Could you please elaborate more and also share the number of nodes in production with their Hardware details. Also share the Status window screen shot to understand about the application configuration.
I would like to know If we can add more then 1200 users in tableau server to access the portal or Is there any limit count for the users. So, The total number of Nodes in production are four nodes, Two are application nodes. Where, One is primary node and the other is application node. The rest two are worker nodes. Please find the screenshot for hardware,
With a core-based license, there is no limit on the number of users that you can add to Tableau Server. You can add as few or as many users as you want, however you'll need to consider performance as well.
An important consideration when using a core-based license model will be performance, because a set number of cores can only support so many users without having an impact on server responsiveness. Depending on the complexity of the workbooks on the server, extract usage, user concurrency, and the depth of interaction, you can support 10 and 100 users per core and still expect reasonable performance.
Hope this helps!