Yes, some code formatting tools exist (within Visual Studio as part of F# Power Tools, and also I believe standalone in some binary form). However, as a community we're currently a little less dogmatic than Go (for example) about what "correct" formatting is.
Tabs vs. Spaces is decided at the language level (it's spaces or it doesn't work) but other things are often a matter of taste. It doesn't tend to matter too much though because (well written) F# code is expressive almost regardless of minor formatting issues (poorly written code in any language is a comprehensibility mess, regardless of "neatness" or newline consistency!)
Tabs vs. Spaces is decided at the language level (it's spaces or it doesn't work) but other things are often a matter of taste. It doesn't tend to matter too much though because (well written) F# code is expressive almost regardless of minor formatting issues (poorly written code in any language is a comprehensibility mess, regardless of "neatness" or newline consistency!)