After using this script -https://github\.com/Yenthe666/InstallScript \-\ to\ install\ nothing\ is\ loaded\ in\ the\ browser\.  

I\ try\ manual\ installation\ with\ same\ result

ubuntu\ 20
nginx\ is\ not\ installed

Some\ results\ from\ the\ terminal:

odoo13@guest:/home\$\ service\ odoo13\-server\ status
●\ odoo13\-server\.service\ \-\ LSB:\ Enterprise\ Business\ Applications
Loaded:\ loaded\ \(/etc/init\.d/odoo13\-server;\ generated\)
Active:\ active\ \(running\)\ since\ Sat\ 2022\-04\-02\ 11:14:27\ UTC;\ 4s\ ago
Docs:\ man:systemd\-sysv\-generator\(8\)
Process:\ 43578\ ExecStart=/etc/init\.d/odoo13\-server\ start\ \(code=exited,\ status=0/SUCCESS\)
Tasks:\ 3\ \(limit:\ 2274\)
Memory:\ 57\.5M
CGroup:\ /system\.slice/odoo13\-server\.service
└─43581\ python3\ /odoo13/odoo13\-server/odoo\-bin\ \-c\ /etc/odoo13\-server\.conf
odoo13@guest:/home\$\ wget\ 192\.248\.154\.165:8013
\-\-2022\-04\-02\ 11:16:08\-\- http://192\.248\.154\.165:8013/
Connecting\ to\ 192\.248\.154\.165:8013\.\.\.\ connected\.
HTTP\ request\ sent,\ awaiting\ response\.\.\.\ 303\ SEE\ OTHER
Location: http://192\.248\.154\.165:8013/web \[following\]
\-\-2022\-04\-02\ 11:16:08\-\- http://192\.248\.154\.165:8013/web
Connecting\ to\ 192\.248\.154\.165:8013\.\.\.\ connected\.
HTTP\ request\ sent,\ awaiting\ response\.\.\.\ 303\ SEE\ OTHER
Location: http://192\.248\.154\.165:8013/web/database/selector \[following\]
\-\-2022\-04\-02\ 11:16:08\-\- http://192.248.154.165:8013/web/database/selector
Connecting to 192.248.154.165:8013... connected.
HTTP request sent, awaiting response... 200 OK
Length: 81628 (80K) [text/html]

Log file:

2022-04-02 11:11:10,503 43437 INFO ? odoo.service.server: Initiating shutdown
2022-04-02 11:11:10,504 43437 INFO ? odoo.service.server: Hit CTRL-C again or send a second signal to force the shutdown.
2022-04-02 11:11:17,211 43488 INFO ? odoo: Odoo version 13.0
2022-04-02 11:11:17,212 43488 INFO ? odoo: Using configuration file at /etc/odoo13-server.conf
2022-04-02 11:11:17,212 43488 INFO ? odoo: addons paths: ['/odoo13/odoo13-server/odoo/addons', '/odoo13/.local/share/Odoo/addons/13.0', '/odoo13/odoo13-server/addons', '/odoo13/custom/addons']
2022-04-02 11:11:17,212 43488 INFO ? odoo: database: default@default:default
2022-04-02 11:11:17,299 43488 INFO ? odoo.addons.base.models.ir_actions_report: You need Wkhtmltopdf to print a pdf version of the reports.
2022-04-02 11:12:06,295 43188 INFO ? werkzeug: 192.248.154.165 - - [02/Apr/2022 11:12:06] "GET / HTTP/1.1" 303 - 1 0.002 0.004
2022-04-02 11:12:06,305 43188 INFO ? werkzeug: 192.248.154.165 - - [02/Apr/2022 11:12:06] "GET /web HTTP/1.1" 303 - 2 0.003 0.005
2022-04-02 11:12:06,319 43188 INFO ? werkzeug: 192.248.154.165 - - [02/Apr/2022 11:12:06] "GET /web/database/selector HTTP/1.1" 200 - 2 0.002 0.011
2022-04-02 11:12:37,435 43488 INFO ? odoo.service.server: Initiating shutdown
2022-04-02 11:12:37,436 43488 INFO ? odoo.service.server: Hit CTRL-C again or send a second signal to force the shutdown.
2022-04-02 11:14:27,485 43581 INFO ? odoo: Odoo version 13.0
2022-04-02 11:14:27,485 43581 INFO ? odoo: Using configuration file at /etc/odoo13-server.conf
2022-04-02 11:14:27,485 43581 INFO ? odoo: addons paths: ['/odoo13/odoo13-server/odoo/addons', '/odoo13/.local/share/Odoo/addons/13.0', '/odoo13/odoo13-server/addons', '/odoo13/custom/addons']
2022-04-02 11:14:27,485 43581 INFO ? odoo: database: default@default:default
2022-04-02 11:14:27,573 43581 INFO ? odoo.addons.base.models.ir_actions_report: You need Wkhtmltopdf to print a pdf version of the reports.