How to find a substring between two identical, arbitrary tokens?

Question

Regular Expressions

I have strings of type Something $token Something$toke
tokencan consist of any characters. Tokens are not known in advance.
Tell me, is it possible to somehow find what is between two tokens using regexp, preferably with one regular expression?
To make it clearer:
from Hello $token world$tokenyou need to get world
from Hello $foo $bar 123 $fooyou need to get $bar 123
, etc.

Answer 1

https://regex101.com/r/mZXjWx/1
"required" in group 2