The goto replacement for these old motor run capacitors these days is to use ceiling fan capacitors of equivalent capacitance (and equal or greater voltage). It’s a different shape but smaller so should fit in fine. Here’s a suitable ceiling fan cap you can have in a day or two: https://www.amazon.com/uxcell-Capacitor-Metallized-Polypropylene-Capacitors/dp/B07JKWBL3S/