There is currently no official version of Garry's Mod (GMod) for Android.
The short answer is no. Facepunch Studios has never released an official mobile version of Garry's Mod. Because the game is built on the complex Source Engine, a direct "port" would require a massive technical overhaul that hasn't happened. gmod android port download link
You're looking for the Android port of Garry's Mod (GMod) and a download link! There is currently no official version of Garry's
Using a Third-Party Source:
GMod Android Port: