How much "space" would u give ur SO?

I haven't heard from my SO since Thursday and I been trying to text him he will read my message and never respond I'm concerned about him .. I just would like him to reply and let me know (it's now Tuesday) and I'm still getting no response... give a week or what ... opinions please thank u ❤. ** And we are about to move in together in under 2 weeks and since he hasn't responded I don't respond or send anything else to him .. he does kind of get in his head alot... but normally I don't get this cold of a cold shoulder..** maybe his phones dead idk. ..