Hello! I have lost my way of search how to configure emacs
for editing config.scm with Scheme highlight mode and parentheses completion.

1. This my instruction does not work: [1]

The mistake is that after start emacs it shows white screen and
requires Scheme implementation (attach 1).

I do not know what to type for this requirement (but i am not familiar with
keys) i just press C-x C-c.
2. Another advice also does not work [2]

# cat ~/.emacs

(add-hook 'scheme-mode-hook 'rainbow-delimiters-mode)
(add-hook 'emacs-lisp-mode-hook 'rainbow-delimiters-mode)
It does not highlight parentheses and does not complete code (attach 2)
3. This instruction to do "M-x run-geiser RET" [3]
does not work too (attach 3).
I have these packages:

# guix package -I | grep ema | cut -f1
emacs
emacs-paredit
emacs-geiser
emacs-scheme-complete
emacs-rainbow-delimiters
[1] https://lists.gnu.org/archive/html/help-guix/2019-04/msg00061.html
[2] https://lists.gnu.org/archive/html/help-guix/2018-11/msg00237.html
[3] https://ebzzry.io/en/emacs-scheme/