How many internal links should I create for my blogpost ?

Maybe this questions has been asked before, but I could not get a clear answer for it. So here it goes.

I need to create internal links for a website but, I feel that I am not doing something right. I have bunch of blogs without any internal links. What I want to do is to rank the shop page and the home page.

Is it ok to link both of the page in one blog post or should I just focus each blog post on one page ? Example Blog #1 to Homepage , Blog #2 to Shop page.

Also, how many internal links should I create for one blog post with around 1400-2800 words ?