This is a paid asset, but now you can download Basic SSAO (URP / LWRP) Free.
Detail this asset from Unity Store: Original Link
Basic SSAO (URP / LWRP) v1.11 (Latest version)
“If possible, please buy the package to support the developer”
Basic SSAO solution for your URP/LWRP project. Based on Depth Texture only means it can work with almost any rendering method.
Features:
-Control various SSAO parameters like: Radius, Self Shadowing Reduction, Occlusion Factor etc to achieve the effect you want
–Smooth depth cutoff
-Resolution downscaling
-Simple and complex normals from depth
reconstruction
–Biliteral blur to prevent color bleeding on edges of geometry
-Gives good looking results even with a few samples per pixel (8, 12)
-Fast, takes 0.2ms to render on my RX580 with 8 samples and 1 blur iteration.
For integration with URP / LWRP pipelines asset uses Render Feature make sure you can add/use render feature in your project. If you are not using any asset using render feature then probably yes 🙂
This asset is not suitable for applying AO on small faraway objects because of depth buffer precision, this asset is more for scene with objects close to camera.
Note: this asset is not meant to be realistic from close up you will be able to see some noise if you are not using big amount of blur passes
Do not work with orthographic camera
Do not work with VR (except multipass rendering)
Works only with LWRP or URP
 – Free Download){kind=link}