Hello and welcome @saish 
Do you mean a different composer template based on the type of topic being created?
If so, I don’t think there’s a way to do that using tags yet but it could be achieved using the form templates if you had a category for each type. There’s also the regular topic templates as well (found in a category’s settings page), but these only allow you to add some pre-filled text to the composer, which might not be exactly what you’re looking for.
(Though there is an existing Feature request to be able to use the form templates with tags that you may want to add your voice to Setting Form Templates with a tag)
There’s also the Discourse Preset Topic Composer plugin which could come in handy as well if you wanted to simplify how users select a particular option.