I'm not entirely sure what you are asking - this seems like a lazy question - you are not entirely clear and you have not explained what you want to do or what you have done already.
I use prokka for annotation of plasmids. There is no set plasmid database in prokka, so you'll have to craft one yourself based on your research question and goals and use it along with the --plasmid flag in the prokka script.
As for your second question, I'm not clear if you're looking for a specific plasmid map or figure for your plasmid of interest (you didn't tell us) or you want a way to draw a plasmid figure? Drawing a plasmid can be done just as you would represent a circular bacterial genome but it's much easier because you're working with minimal data.