Yes, its a scam. Apple will never contact you to inform you of an account or device lockout.
See >>> Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support
Don’t respond to, or engage with, the message. Certainly do not, under any circumstances, attempt to contact anyone using the contact details that may have been provided.
Alerts of this nature are designed to scare the unwary into giving away sensitive information - or to fool you into doing something that you shouldn’t - usually to defraud you financially.
If you suspect that your AppleID has been compromised, follow the advice outlined here:
If you think your Apple ID has been compromised - Apple Support
Additional Information
The majority of threats to which you will be invariably exposed will surface via web pages or embedded links within email or other messaging platforms. Browser-based attacks can be largely and successfully mitigated by installing a good Content and Ad-blocking product. One of the very best and most respected within the Apple App Store - designed for iPad, iPhone and Mac - is 1Blocker for Safari.
https://apps.apple.com/app/1blocker-for-safari/id1365531024
1Blocker is highly configurable - and crucially does not rely upon an external proxy-service of dubious provenance, often utilised by so-called AntiVirus products intended for iOS/iPadOS. Instead, all processing by 1Blocker takes place on your device - and contrary to expectations, Safari will run faster and more efficiently.
Unwanted content is not simply filtered after download (a technique used by basic/inferior products), but instead undesirable embedded content is blocked from download - improving both speed and efficiency of the Safari. 1Blocker has also introduced its new “Firewall” functions - that are explicitly designed to block “trackers”. Being implemented at the network-layer, this additional protection works across all Apps. Further updates to 1Blocker have introduced additional network extensions, extending protection to other Apps.
A further and strongly recommended) measure to improve protection is to use a security focussed DNS Service in preference to automatic DNS settings. This can either be set on a per-device basis in Settings, or can be set-up on your home Router - and in so doing extends the benefit of this specific protection to other devices on your local network. I recommend using one of the following DNS services - for which IPv4 and IPv6 server addresses are listed:
Quad9 (highly recommended)
9.9.9.9
149.112.112.112
2620:fe::fe
2620:fe::9
OpenDNS
208.67.222.222
208.67.220.220
2620:119:35::35
2620:119:53::53
Cloudflare
1.1.1.1
1.0.0.1
2606:4700:4700::1111
2606:4700:4700::1001
Use of the above DNS services will help to shield you from “known bad” websites and URLs - and when used alongside 1Blocker, or other effective Content Blocker, provides defence in depth.
There are advanced techniques to further “harden” iOS/iPadOS (such as using DoH, DoT and DNSSEC); while fully and effectively supported by iOS/iPadOS, Apple doesn’t expose this capability via device settings - but there are easy ways to access this functionality. Aside from installing a device-profile from a external device-management system, a really easy way to set and manage DoH/DoT settings is to use a third-party utility App - DNSecure:
https://apps.apple.com/app/dnsecure/id1533413232
This App does exactly what is needed to effectively configure DoH/DoT - and is free to download and install. Many DNS providers are already preconfigured - including Quad9 and Cloudflare. Additional secure DNS providers can be added if required.
Apple has recently introduced its new Private Relay to its iCloud+ subscribers - in part employing ODoH (a variant of DoH) as an element of this new functionality. More details of this feature can be found here:
About iCloud Private Relay - Apple Support
In summary, there are many mitigations that you can use to better secure your iPad from malware and other potential threats. A good content blocker, combined with secure DNS and other protections offered by iPadOS can reduce your exposure to malicious links, content and threat actors.
I hope you find this information and insight to be helpful.