[How To] Gaussian Blur/Glow Effect?

5 years later and there is still no blur tool in Adobe Fresco is a joke. Adobe invested the blur tool and it is seriously lacking in Fresco. The work around does not produce the same uniform effect and takes much longer than necessary. Absolutely absurd this basic tool is lacking. 

Personally I like to use the soft brush in the basic category with the pixel brushes and to use a smudge to polish it off. Using a thinner thickness will give a fainter glow and thicker one will give a more bright one. (Tip: you can also use a paler color to give a slight or really faint glow). Hope this helps🙂

If you have the full Adobe Suite, I suggest you use Photoshop... While over-engineered for simply drawing, etc, Photoshop has all the tools you'll ever need for that and more...

Where you say Lacking, I say Differenciates. I like that Fresco is not an exact copy of Procreate and I hope they continue to be clearly separate programs, created by different businesses.
If you use live brushes you should be able to get a good gradient or blur between two colours through painting each colour so it connects. Fresco also has a multi-colour selector option in the eye-dropper which gives a good/interesting flow between colours.