Inteational SEO Help

Hello Pals,

I really need help with my this problem, only experienced SEO can help me.

Let suppose i have 4 website in total.

3 website are my product website and one is my main website.

Now i want to keep all my 3 website under my one website. i want to keep same product information on my main website.

so here my question is can we use same product content on my main website ?

Can i use the same case study(product) on my main website ?
will google penalize for the same ? WordPress ...