How can I edit Homepage Big Slider?

What is your sites URL please.

@sbscollective, You are not aware of it but please don’t put [Theme: Outspoken] (now deleted) in your topic title. That’s not how theme support works in these forums.

That’s a commercial theme and those are not supported in these forums.

https://wpshower.com/forums

Sliders can get complicated. Your best bet to get support is to ask the author. When you purchased that theme support was included from that vendor.