If I sign up for the unlimited plan do I get this product

Envato Customers Purchases and Subscriptions
1

If I sign up for the unlimited plan do I get this product RTFX Generator [1000 FX elements] [After Effects + Pre-rendered clips] by RTFX As part of my membership

2

Unfortunately no.

3

No that item does not exist at Envato elements you have to purchase it separately/individually from VideoHive