What is the ruling on working for the website (Bestchange), which directs users to reliable money transfer sites in exchange for a commission, where the work involves promoting the website and receiving financial compensation for each click or registration, bearing in mind that the websites it offers include a picture of a woman's hand holding a computer?

If the website's function is to direct to reliable platforms for transferring money from one bank to another for a commission, then there is no objection to this in principle, with emphasis on the condition of immediate qabdh (possession) in currency exchange. As for your work in advertising the website and taking a commission for clicks or registrations, there is no objection to it, as long as it does not involve aiding or guiding to something forbidden.