need help for the circuits of a consumable button that gives the player a permanent speed boost

[blazing hawk]

This is using custom ingame currency (not tokens)

[fast sigil]

It depends how the currency is set up is it using the in game currency set up or custom?

If its the in game you can make it using get currency if equals (set amount) then player add role

And configure the role to make the locomotion speed as fast as you choose (with a limit)