How do I use templates like this?

I want to use a template to make a currency symbol like this, can someone help me or give me a page that can help?

Upload the Currency Symbol, e.g. Robux Gold.svg

Create a currency template e.g. Template:Robux

[[File:Robux Gold.svg|20px|link=]]{{{1|}}}

Use the currency template with 100 (for 100 Robux):

{{Robux|100}}

Where is the currency option?

> Where is the currency option?

What do you mean? You do have to find or create the currency symbol.

If you want the template to allow many currencies, see Help:Extension:ParserFunctions##switch

For further help, please explain clearly what you want your template to do, and give links if possible.

What do you think?