Is there any way to force a specific machine ( Via MAC address) to use Specific SSID.
I have 3 different SSID in my MR WAP and i need just 1 SSID automatically connected to specific MAC.
No. You could only prevent that endpoint from connecting to the SSIDs it should not connect to, e.g. by using Authentication (802.1x / MAB)
@CptnCrnch is correct the only I would think would be to have the machine AUTO CONNECT to that SSID.
Another option would be having that endpoint being managed by MDM and force it to only connect to a specific SSID that way.
You could use Meraki Authentication with WPA2-Enterprise mode, and only authorise the user for one of the SSIDs.