Xjyuk

Actually I'm using awesomebox package to draw blocks around text. Here there is an example.

documentclass[a4paper,12pt]article
usepackageawesomebox
usepackagefontawesome5
usepackagelipsum

begindocument
awesomebox[violet]2ptfaRocketvioletlipsum[4]
enddocument

Into the guide there is written that "The specific aim of this package is to use FontAwesome 5 icons to ease the illustration of these boxes."

Is there a font, a symbol to be inserted (instead of the fontawesome5 symbols) with a suitable strategy, to have three different types of speedometer without text like this image?

A simple pic with the "speed" as parameter may do.

documentclass[tikz,border=7pt]standalone
usetikzlibrarydecorations.text
begindocument
begintikzpicture[pics/speedometer/.style=code=
 foreach X/Y [count=Z] in green!70!black/low,orange/medium,red/high
 fill[fill=X] (240-Z*60:4) arc(240-Z*60:180-Z*60:4) -- 
 (180-Z*60:3) arc(180-Z*60:240-Z*60:3) -- cycle;
 path [decorate, decoration=text along path,
 text=colorwhiteHugesffamilybfseries, text align=center] 
 (240-Z*60:3.2) arc(240-Z*60:180-Z*60:3.25);
 fill (180-#1+8:0.3) arc (180-#1+8:180-#1+344:0.3) -- (180-#1-0.5:3.25)
 -- (180-#1+0.5:3.25) -- cycle;
 ]
 path (0,0) picspeedometer=45
 (0,-5) picspeedometer=80
 (0,-10) picspeedometer=160;
endtikzpicture
enddocument

An arguably more fancy version thereof is obtained when making the color transitions smooth. To this end we need to rotate and flip the color wheel that comes with the shadings library. This can be done using transform canvas, which has some side-effect, which is why the results get stored in a savebox and then reused.

documentclass[tikz,border=7pt]standalone
usetikzlibrarydecorations.text,shadings
newsaveboxColorWheelRotated
sboxColorWheelRotatedbegintikzpicture
clip (180:4) arc(180:0:4) -- (3,0) arc(0:180:3);
 shade[shading=color wheel,transform canvas=
 rotate=-65,xscale=-1] (0,0) circle [radius=4];
endtikzpicture
begindocument
begintikzpicture[pics/speedometer/.style=code=
 path (0,0) node[above,inner sep=0pt] useboxColorWheelRotated;
 foreach X/Y [count=Z] in green!70!black/low,orange/medium,red/high
 
 path [decorate, decoration=text along path,
 text=colorwhiteHugesffamilybfseries, text align=center] 
 (240-Z*60:3.2) arc(240-Z*60:180-Z*60:3.25);
 fill (180-#1+8:0.3) arc (180-#1+8:180-#1+344:0.3) -- (180-#1-0.5:3.25)
 -- (180-#1+0.5:3.25) -- cycle;
 ]
 path (0,0) picspeedometer=45
 (0,-5) picspeedometer=80
 (0,-10) picspeedometer=160;
endtikzpicture
enddocument

In order to make this symbols you may want to kick out the texts.

documentclass[a4paper,12pt]article
usepackageawesomebox
usepackagelipsum
usepackagetikz
tikzsetpics/speedometer/.style=code=
 foreach X/Y [count=Z] in green!70!black/low,orange/medium,red/high
 fill[fill=X] (240-Z*60:4) arc(240-Z*60:180-Z*60:4) -- 
 (180-Z*60:3) arc(180-Z*60:240-Z*60:3) -- cycle;
 fill (180-#1+8:0.3) arc (180-#1+8:180-#1+344:0.3) -- (180-#1-0.5:3.25)
 -- (180-#1+0.5:3.25) -- cycle;
 
newsaveboxLowSpeed 
newsaveboxMediumSpeed 
newsaveboxHighSpeed 
sboxLowSpeedscalebox0.1tikzpicspeedometer=45;
sboxMediumSpeedscalebox0.1tikzpicspeedometer=90;
sboxHighSpeedscalebox0.1tikzpicspeedometer=135;
begindocument
awesomebox[violet]2ptuseboxLowSpeedvioletlipsum[4]
enddocument