What is the ruling on the small profits generated from investment certificates with quarterly returns in Islamic banks? And which Islamic banks are recommended to deal with?

Investment certificates are usurious and forbidden (haram). They are nothing more than a loan, a form of bank deposit where money is used in private investments after ownership is established and the return of a like amount with an increase is guaranteed. This is the productive usurious loan that was common in the pre-Islamic era (Jahiliyyah), and there is no difference between a small or large amount of interest on them.