VCA and VCP are two different tracks/certification levels.
Anyway, in order to become certified you'll need to fulfil all of the requirements for a specific track. The order in which you take the exam(s), or attend a required training is up to you.
You can directly to the VCP-DCV certification without the VCA.
It's mandatory to take an official course from VMware (not necessary delivered by them but must to be an accredited company who has a VCI, VMware Certified Instructor).
Then, you must take the Foundations exam (which can be done on-line and has a cost, around $125) and finally the famous one, the VCP-DCV exam (costs $250).
The current one is the VCP6.5-DCV, you can check here the prerequisites and the blueprint: https://www.vmware.com/education-services/certification/vcp6-5-dcv.html
I hope this helps you to understand it.
You can directly to the VCP-DCV certification without the VCA
Apology for it's still being unclear to me.
Please mention that can i skip exam of VCA and do the VCP-DCV6.5 $250?
Or it is compulsory that I should take the road do the VCA and then VCP-DCV6.5?
As depping you can check the link that he provided.
You must take the Foundations exam as it's requirement to become certified.
The VCA doesn't matter when you are going to the VCP so, as said before and the webpage I provided it's quite clear.
1. Attend an official course.
2. Pass the Foundations Exam (2V0-602).
3. Pass the VCP6.5 -DCV (2V0-622).
I hope this is more clear.
Thanks everyone for making it clear to clearest!