Hi @mohamed.ibtihaj
No impact. Nexus 7000/7700 modules are hot swappable and you can remove/install them without any impact.
First, for the insertion, here is the installation guide:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/hw/nexus7000/installation/guide/n7k_hig_book/n7k_replacing.html#89776
The only thing you need to be aware, if is this is a new module, you will need to allocate the ports of the module to the desired VDC(s).
switch(config)# vdc vdc-name
switch(config-vdc)# allocate interface ethernet slot/port
Stay safe,
Sergiu