can a domain be sold immediately after registering?

[Sponge Bob]

for example if i buy a domain from say namecheap.com can i put it for sale immediately or is there any minimum waiting time(or days) period?

nop it cant, you need to wait 60 days.

But you can transfer the domain to another user on the same company example

namecheap to namecheap just push the domain to the new user.