You can call next() and discard the result, but that will only work if you are sure about how many tokens you get in each line.
You could split on the dollar sign, then call nextDouible(). Remember you pass the delimiter to the Scanner as a regular expression, so you could use dollar, but that is a meta-character for last character in line, so may have to be escaped like this \\$.
Remember calling nextDouble may leave you with an empty line, as described
here.
You may be able to match a
regular expression which takes everything after the $ sign.
And the String#split suggestion will probably work, but you might have to change the delimiter.