Puerto Rico should give you a tax credit for how much you pay to the IRS that year if you're a resident of Puerto Rico. So you shouldn't be taxed on that twice.
Unclear if you're a resident of PR or not here. There are different implications then. This site has info on specific tax incentives in Puerto Rico which don't apply to you, but also some general info about how tax is treated in PR vs the mainland as well: https://act60.co/t/what-is-bona-fide-residency-and-is-it-a-requirement-of-act-60/112
